diff --git a/.appveyor.yml b/.appveyor.yml
deleted file mode 100644
index 0702313..0000000
--- a/.appveyor.yml
+++ /dev/null
@@ -1,150 +0,0 @@
-version: '{branch}-{build}'
-build: off
-image: Visual Studio 2019
-environment:
-  global:
-    TWINE_USERNAME: ionel
-    COVERALLS_EXTRAS: '-v'
-    COVERALLS_REPO_TOKEN: 6picUzuGNWKI5w3rsEyZGNvyMZ47Cz9hZ
-  matrix:
-    - TOXENV: check
-      TOXPYTHON: C:\Python36\python.exe
-      PYTHON_HOME: C:\Python36
-      PYTHON_VERSION: '3.6'
-      PYTHON_ARCH: '32'
-    - TOXENV: py27-cover,codecov,coveralls
-      TOXPYTHON: C:\Python27\python.exe
-      PYTHON_HOME: C:\Python27
-      PYTHON_VERSION: '2.7'
-      PYTHON_ARCH: '32'
-    - TOXENV: py27-cover,codecov,coveralls
-      TOXPYTHON: C:\Python27-x64\python.exe
-      PYTHON_HOME: C:\Python27-x64
-      PYTHON_VERSION: '2.7'
-      PYTHON_ARCH: '64'
-    - TOXENV: py27-nocov
-      TOXPYTHON: C:\Python27\python.exe
-      PYTHON_HOME: C:\Python27
-      PYTHON_VERSION: '2.7'
-      PYTHON_ARCH: '32'
-      WHEEL_PATH: .tox/dist
-    - TOXENV: py27-nocov
-      TOXPYTHON: C:\Python27-x64\python.exe
-      PYTHON_HOME: C:\Python27-x64
-      PYTHON_VERSION: '2.7'
-      PYTHON_ARCH: '64'
-      WHEEL_PATH: .tox/dist
-    - TOXENV: py36-cover,codecov,coveralls
-      TOXPYTHON: C:\Python36\python.exe
-      PYTHON_HOME: C:\Python36
-      PYTHON_VERSION: '3.6'
-      PYTHON_ARCH: '32'
-    - TOXENV: py36-cover,codecov,coveralls
-      TOXPYTHON: C:\Python36-x64\python.exe
-      PYTHON_HOME: C:\Python36-x64
-      PYTHON_VERSION: '3.6'
-      PYTHON_ARCH: '64'
-    - TOXENV: py36-nocov
-      TOXPYTHON: C:\Python36\python.exe
-      PYTHON_HOME: C:\Python36
-      PYTHON_VERSION: '3.6'
-      PYTHON_ARCH: '32'
-      WHEEL_PATH: .tox/dist
-    - TOXENV: py36-nocov
-      TOXPYTHON: C:\Python36-x64\python.exe
-      PYTHON_HOME: C:\Python36-x64
-      PYTHON_VERSION: '3.6'
-      PYTHON_ARCH: '64'
-      WHEEL_PATH: .tox/dist
-    - TOXENV: py37-cover,codecov,coveralls
-      TOXPYTHON: C:\Python37\python.exe
-      PYTHON_HOME: C:\Python37
-      PYTHON_VERSION: '3.7'
-      PYTHON_ARCH: '32'
-    - TOXENV: py37-cover,codecov,coveralls
-      TOXPYTHON: C:\Python37-x64\python.exe
-      PYTHON_HOME: C:\Python37-x64
-      PYTHON_VERSION: '3.7'
-      PYTHON_ARCH: '64'
-    - TOXENV: py37-nocov
-      TOXPYTHON: C:\Python37\python.exe
-      PYTHON_HOME: C:\Python37
-      PYTHON_VERSION: '3.7'
-      PYTHON_ARCH: '32'
-      WHEEL_PATH: .tox/dist
-    - TOXENV: py37-nocov
-      TOXPYTHON: C:\Python37-x64\python.exe
-      PYTHON_HOME: C:\Python37-x64
-      PYTHON_VERSION: '3.7'
-      PYTHON_ARCH: '64'
-      WHEEL_PATH: .tox/dist
-    - TOXENV: py38-cover,codecov,coveralls
-      TOXPYTHON: C:\Python38\python.exe
-      PYTHON_HOME: C:\Python38
-      PYTHON_VERSION: '3.8'
-      PYTHON_ARCH: '32'
-    - TOXENV: py38-cover,codecov,coveralls
-      TOXPYTHON: C:\Python38-x64\python.exe
-      PYTHON_HOME: C:\Python38-x64
-      PYTHON_VERSION: '3.8'
-      PYTHON_ARCH: '64'
-    - TOXENV: py38-nocov
-      TOXPYTHON: C:\Python38\python.exe
-      PYTHON_HOME: C:\Python38
-      PYTHON_VERSION: '3.8'
-      PYTHON_ARCH: '32'
-      WHEEL_PATH: .tox/dist
-    - TOXENV: py38-nocov
-      TOXPYTHON: C:\Python38-x64\python.exe
-      PYTHON_HOME: C:\Python38-x64
-      PYTHON_VERSION: '3.8'
-      PYTHON_ARCH: '64'
-      WHEEL_PATH: .tox/dist
-    - TOXENV: py39-cover,codecov,coveralls
-      TOXPYTHON: C:\Python39\python.exe
-      PYTHON_HOME: C:\Python39
-      PYTHON_VERSION: '3.9'
-      PYTHON_ARCH: '32'
-    - TOXENV: py39-cover,codecov,coveralls
-      TOXPYTHON: C:\Python39-x64\python.exe
-      PYTHON_HOME: C:\Python39-x64
-      PYTHON_VERSION: '3.9'
-      PYTHON_ARCH: '64'
-    - TOXENV: py39-nocov
-      TOXPYTHON: C:\Python39\python.exe
-      PYTHON_HOME: C:\Python39
-      PYTHON_VERSION: '3.9'
-      PYTHON_ARCH: '32'
-      WHEEL_PATH: .tox/dist
-    - TOXENV: py39-nocov
-      TOXPYTHON: C:\Python39-x64\python.exe
-      PYTHON_HOME: C:\Python39-x64
-      PYTHON_VERSION: '3.9'
-      PYTHON_ARCH: '64'
-      WHEEL_PATH: .tox/dist
-init:
-  - ps: echo $env:TOXENV
-  - ps: ls C:\Python*
-install:
-  - '%PYTHON_HOME%\python -mpip install --progress-bar=off -rci/requirements.txt'
-  - '%PYTHON_HOME%\Scripts\virtualenv --version'
-  - '%PYTHON_HOME%\Scripts\pip --version'
-  - '%PYTHON_HOME%\Scripts\tox --version'
-test_script:
-  - ps: |
-      Set-PSDebug -Trace 1
-      $ErrorActionPreference = "Stop"
-      if ($Env:WHEEL_PATH) {
-        cmd /E:ON /V:ON /C .\ci\appveyor-with-compiler.cmd $Env:PYTHON_HOME\Scripts\tox --wheel
-        iex "$Env:PYTHON_HOME\Scripts\twine check $Env:WHEEL_PATH/*.whl"
-        iex "$Env:PYTHON_HOME\Scripts\twine upload --repository-url https://test.pypi.org/legacy/ --skip-existing $Env:WHEEL_PATH/*.whl"
-      } else {
-        cmd /E:ON /V:ON /C .\ci\appveyor-with-compiler.cmd $Env:PYTHON_HOME\Scripts\tox
-      }
-on_failure:
-  - ps: dir "env:"
-  - ps: get-content .tox\*\log\*
-
-### To enable remote debugging uncomment this (also, see: http://www.appveyor.com/docs/how-to/rdp-to-build-worker):
-# on_finish:
-#   - ps: $blockRdp = $true; iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))
diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 9609bf6..f04971d 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 1.6.0
+current_version = 1.7.0
 commit = True
 tag = True
 
@@ -7,10 +7,14 @@ tag = True
 search = 'fallback_version': '{current_version}'
 replace = 'fallback_version': '{new_version}'
 
-[bumpversion:file:README.rst]
+[bumpversion:file (badge):README.rst]
 search = /v{current_version}.svg
 replace = /v{new_version}.svg
 
+[bumpversion:file (link):README.rst]
+search = /v{current_version}...master
+replace = /v{new_version}...master
+
 [bumpversion:file:docs/conf.py]
 search = version = release = '{current_version}'
 replace = version = release = '{new_version}'
@@ -18,4 +22,3 @@ replace = version = release = '{new_version}'
 [bumpversion:file:src/lazy_object_proxy/__init__.py]
 search = __version__ = '{current_version}'
 replace = __version__ = '{new_version}'
-
diff --git a/.cookiecutterrc b/.cookiecutterrc
index 4ceb3e2..0957031 100644
--- a/.cookiecutterrc
+++ b/.cookiecutterrc
@@ -2,7 +2,7 @@
 
 default_context:
     allow_tests_inside_package: no
-    appveyor: yes
+    appveyor: no
     c_extension_function: '-'
     c_extension_module: '-'
     c_extension_optional: yes
@@ -16,11 +16,11 @@ default_context:
     command_line_interface: no
     command_line_interface_bin_name: '-'
     coveralls: yes
-    coveralls_token: 6picUzuGNWKI5w3rsEyZGNvyMZ47Cz9hZ
     distribution_name: lazy-object-proxy
     email: contact@ionelmc.ro
     full_name: Ionel Cristian Mărieș
-    legacy_python: yes
+    github_actions: yes
+    legacy_python: no
     license: BSD 2-Clause License
     linter: flake8
     package_name: lazy_object_proxy
@@ -29,9 +29,10 @@ default_context:
     project_short_description: A fast and thorough lazy object proxy.
     pypi_badge: yes
     pypi_disable_upload: no
-    release_date: '2020-11-26'
+    release_date: '2021-03-22'
     repo_hosting: github.com
     repo_hosting_domain: github.com
+    repo_main_branch: master
     repo_name: python-lazy-object-proxy
     repo_username: ionelmc
     requiresio: yes
@@ -45,9 +46,10 @@ default_context:
     test_matrix_configurator: no
     test_matrix_separate_coverage: yes
     test_runner: pytest
-    travis: yes
-    travis_osx: yes
-    version: 1.5.2
+    travis: no
+    travis_osx: no
+    version: 1.6.0
+    version_manager: bump2version
     website: https://blog.ionelmc.ro
     year_from: '2014'
     year_to: '2021'
diff --git a/.github/workflows/github-actions.yml b/.github/workflows/github-actions.yml
new file mode 100644
index 0000000..28a4b2c
--- /dev/null
+++ b/.github/workflows/github-actions.yml
@@ -0,0 +1,573 @@
+name: build
+on: [push, pull_request]
+jobs:
+  test:
+    name: ${{ matrix.name }}
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 30
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - name: 'check'
+            python: '3.9'
+            toxpython: 'python3.9'
+            tox_env: 'check'
+            os: 'ubuntu-latest'
+          - name: 'docs'
+            python: '3.9'
+            toxpython: 'python3.9'
+            tox_env: 'docs'
+            os: 'ubuntu-latest'
+          - name: 'py36-cover (ubuntu/x86_64)'
+            python: '3.6'
+            toxpython: 'python3.6'
+            python_arch: 'x64'
+            tox_env: 'py36-cover,codecov'
+            cibw_arch: 'x86_64'
+            cibw_build: false
+            os: 'ubuntu-latest'
+          - name: 'py36-cover (windows/AMD64)'
+            python: '3.6'
+            toxpython: 'python3.6'
+            python_arch: 'x64'
+            tox_env: 'py36-cover,codecov'
+            cibw_arch: 'AMD64'
+            cibw_build: false
+            os: 'windows-latest'
+          - name: 'py36-cover (macos/x86_64)'
+            python: '3.6'
+            toxpython: 'python3.6'
+            python_arch: 'x64'
+            tox_env: 'py36-cover,codecov'
+            cibw_arch: 'x86_64'
+            cibw_build: false
+            os: 'macos-latest'
+          - name: 'py36-nocov (ubuntu/x86_64/manylinux)'
+            python: '3.6'
+            toxpython: 'python3.6'
+            python_arch: 'x64'
+            tox_env: 'py36-nocov'
+            cibw_arch: 'x86_64'
+            cibw_build: 'cp36-*manylinux*'
+            os: 'ubuntu-latest'
+          - name: 'py36-nocov (ubuntu/x86_64/musllinux)'
+            python: '3.6'
+            toxpython: 'python3.6'
+            python_arch: 'x64'
+            tox_env: 'py36-nocov'
+            cibw_arch: 'x86_64'
+            cibw_build: 'cp36-*musllinux*'
+            os: 'ubuntu-latest'
+          - name: 'py36-nocov (ubuntu/aarch64/manylinux)'
+            python: '3.6'
+            toxpython: 'python3.6'
+            python_arch: 'x64'
+            tox_env: 'py36-nocov'
+            cibw_arch: 'aarch64'
+            cibw_build: 'cp36-*manylinux*'
+            os: 'ubuntu-latest'
+          - name: 'py36-nocov (ubuntu/aarch64/musllinux)'
+            python: '3.6'
+            toxpython: 'python3.6'
+            python_arch: 'x64'
+            tox_env: 'py36-nocov'
+            cibw_arch: 'aarch64'
+            cibw_build: 'cp36-*musllinux*'
+            os: 'ubuntu-latest'
+          - name: 'py36-nocov (windows/AMD64)'
+            python: '3.6'
+            toxpython: 'python3.6'
+            python_arch: 'x64'
+            tox_env: 'py36-nocov'
+            cibw_arch: 'AMD64'
+            cibw_build: 'cp36-*'
+            os: 'windows-latest'
+          - name: 'py36-nocov (windows/x86)'
+            python: '3.6'
+            toxpython: 'python3.6'
+            python_arch: 'x86'
+            tox_env: 'py36-nocov'
+            cibw_arch: 'x86'
+            cibw_build: 'cp36-*'
+            os: 'windows-latest'
+          - name: 'py36-nocov (macos/x86_64)'
+            python: '3.6'
+            toxpython: 'python3.6'
+            python_arch: 'x64'
+            tox_env: 'py36-nocov'
+            cibw_arch: 'x86_64'
+            cibw_build: 'cp36-*'
+            os: 'macos-latest'
+          - name: 'py37-cover (ubuntu/x86_64)'
+            python: '3.7'
+            toxpython: 'python3.7'
+            python_arch: 'x64'
+            tox_env: 'py37-cover,codecov'
+            cibw_arch: 'x86_64'
+            cibw_build: false
+            os: 'ubuntu-latest'
+          - name: 'py37-cover (windows/AMD64)'
+            python: '3.7'
+            toxpython: 'python3.7'
+            python_arch: 'x64'
+            tox_env: 'py37-cover,codecov'
+            cibw_arch: 'AMD64'
+            cibw_build: false
+            os: 'windows-latest'
+          - name: 'py37-cover (macos/x86_64)'
+            python: '3.7'
+            toxpython: 'python3.7'
+            python_arch: 'x64'
+            tox_env: 'py37-cover,codecov'
+            cibw_arch: 'x86_64'
+            cibw_build: false
+            os: 'macos-latest'
+          - name: 'py37-nocov (ubuntu/x86_64/manylinux)'
+            python: '3.7'
+            toxpython: 'python3.7'
+            python_arch: 'x64'
+            tox_env: 'py37-nocov'
+            cibw_arch: 'x86_64'
+            cibw_build: 'cp37-*manylinux*'
+            os: 'ubuntu-latest'
+          - name: 'py37-nocov (ubuntu/x86_64/musllinux)'
+            python: '3.7'
+            toxpython: 'python3.7'
+            python_arch: 'x64'
+            tox_env: 'py37-nocov'
+            cibw_arch: 'x86_64'
+            cibw_build: 'cp37-*musllinux*'
+            os: 'ubuntu-latest'
+          - name: 'py37-nocov (ubuntu/aarch64/manylinux)'
+            python: '3.7'
+            toxpython: 'python3.7'
+            python_arch: 'x64'
+            tox_env: 'py37-nocov'
+            cibw_arch: 'aarch64'
+            cibw_build: 'cp37-*manylinux*'
+            os: 'ubuntu-latest'
+          - name: 'py37-nocov (ubuntu/aarch64/musllinux)'
+            python: '3.7'
+            toxpython: 'python3.7'
+            python_arch: 'x64'
+            tox_env: 'py37-nocov'
+            cibw_arch: 'aarch64'
+            cibw_build: 'cp37-*musllinux*'
+            os: 'ubuntu-latest'
+          - name: 'py37-nocov (windows/AMD64)'
+            python: '3.7'
+            toxpython: 'python3.7'
+            python_arch: 'x64'
+            tox_env: 'py37-nocov'
+            cibw_arch: 'AMD64'
+            cibw_build: 'cp37-*'
+            os: 'windows-latest'
+          - name: 'py37-nocov (windows/x86)'
+            python: '3.7'
+            toxpython: 'python3.7'
+            python_arch: 'x86'
+            tox_env: 'py37-nocov'
+            cibw_arch: 'x86'
+            cibw_build: 'cp37-*'
+            os: 'windows-latest'
+          - name: 'py37-nocov (macos/x86_64)'
+            python: '3.7'
+            toxpython: 'python3.7'
+            python_arch: 'x64'
+            tox_env: 'py37-nocov'
+            cibw_arch: 'x86_64'
+            cibw_build: 'cp37-*'
+            os: 'macos-latest'
+          - name: 'py38-cover (ubuntu/x86_64)'
+            python: '3.8'
+            toxpython: 'python3.8'
+            python_arch: 'x64'
+            tox_env: 'py38-cover,codecov'
+            cibw_arch: 'x86_64'
+            cibw_build: false
+            os: 'ubuntu-latest'
+          - name: 'py38-cover (windows/AMD64)'
+            python: '3.8'
+            toxpython: 'python3.8'
+            python_arch: 'x64'
+            tox_env: 'py38-cover,codecov'
+            cibw_arch: 'AMD64'
+            cibw_build: false
+            os: 'windows-latest'
+          - name: 'py38-cover (macos/x86_64)'
+            python: '3.8'
+            toxpython: 'python3.8'
+            python_arch: 'x64'
+            tox_env: 'py38-cover,codecov'
+            cibw_arch: 'x86_64'
+            cibw_build: false
+            os: 'macos-latest'
+          - name: 'py38-nocov (ubuntu/x86_64/manylinux)'
+            python: '3.8'
+            toxpython: 'python3.8'
+            python_arch: 'x64'
+            tox_env: 'py38-nocov'
+            cibw_arch: 'x86_64'
+            cibw_build: 'cp38-*manylinux*'
+            os: 'ubuntu-latest'
+          - name: 'py38-nocov (ubuntu/x86_64/musllinux)'
+            python: '3.8'
+            toxpython: 'python3.8'
+            python_arch: 'x64'
+            tox_env: 'py38-nocov'
+            cibw_arch: 'x86_64'
+            cibw_build: 'cp38-*musllinux*'
+            os: 'ubuntu-latest'
+          - name: 'py38-nocov (ubuntu/aarch64/manylinux)'
+            python: '3.8'
+            toxpython: 'python3.8'
+            python_arch: 'x64'
+            tox_env: 'py38-nocov'
+            cibw_arch: 'aarch64'
+            cibw_build: 'cp38-*manylinux*'
+            os: 'ubuntu-latest'
+          - name: 'py38-nocov (ubuntu/aarch64/musllinux)'
+            python: '3.8'
+            toxpython: 'python3.8'
+            python_arch: 'x64'
+            tox_env: 'py38-nocov'
+            cibw_arch: 'aarch64'
+            cibw_build: 'cp38-*musllinux*'
+            os: 'ubuntu-latest'
+          - name: 'py38-nocov (windows/AMD64)'
+            python: '3.8'
+            toxpython: 'python3.8'
+            python_arch: 'x64'
+            tox_env: 'py38-nocov'
+            cibw_arch: 'AMD64'
+            cibw_build: 'cp38-*'
+            os: 'windows-latest'
+          - name: 'py38-nocov (windows/x86)'
+            python: '3.8'
+            toxpython: 'python3.8'
+            python_arch: 'x86'
+            tox_env: 'py38-nocov'
+            cibw_arch: 'x86'
+            cibw_build: 'cp38-*'
+            os: 'windows-latest'
+          - name: 'py38-nocov (macos/x86_64)'
+            python: '3.8'
+            toxpython: 'python3.8'
+            python_arch: 'x64'
+            tox_env: 'py38-nocov'
+            cibw_arch: 'x86_64'
+            cibw_build: 'cp38-*'
+            os: 'macos-latest'
+          - name: 'py39-cover (ubuntu/x86_64)'
+            python: '3.9'
+            toxpython: 'python3.9'
+            python_arch: 'x64'
+            tox_env: 'py39-cover,codecov'
+            cibw_arch: 'x86_64'
+            cibw_build: false
+            os: 'ubuntu-latest'
+          - name: 'py39-cover (windows/AMD64)'
+            python: '3.9'
+            toxpython: 'python3.9'
+            python_arch: 'x64'
+            tox_env: 'py39-cover,codecov'
+            cibw_arch: 'AMD64'
+            cibw_build: false
+            os: 'windows-latest'
+          - name: 'py39-cover (macos/x86_64)'
+            python: '3.9'
+            toxpython: 'python3.9'
+            python_arch: 'x64'
+            tox_env: 'py39-cover,codecov'
+            cibw_arch: 'x86_64'
+            cibw_build: false
+            os: 'macos-latest'
+          - name: 'py39-nocov (ubuntu/x86_64/manylinux)'
+            python: '3.9'
+            toxpython: 'python3.9'
+            python_arch: 'x64'
+            tox_env: 'py39-nocov'
+            cibw_arch: 'x86_64'
+            cibw_build: 'cp39-*manylinux*'
+            os: 'ubuntu-latest'
+          - name: 'py39-nocov (ubuntu/x86_64/musllinux)'
+            python: '3.9'
+            toxpython: 'python3.9'
+            python_arch: 'x64'
+            tox_env: 'py39-nocov'
+            cibw_arch: 'x86_64'
+            cibw_build: 'cp39-*musllinux*'
+            os: 'ubuntu-latest'
+          - name: 'py39-nocov (ubuntu/aarch64/manylinux)'
+            python: '3.9'
+            toxpython: 'python3.9'
+            python_arch: 'x64'
+            tox_env: 'py39-nocov'
+            cibw_arch: 'aarch64'
+            cibw_build: 'cp39-*manylinux*'
+            os: 'ubuntu-latest'
+          - name: 'py39-nocov (ubuntu/aarch64/musllinux)'
+            python: '3.9'
+            toxpython: 'python3.9'
+            python_arch: 'x64'
+            tox_env: 'py39-nocov'
+            cibw_arch: 'aarch64'
+            cibw_build: 'cp39-*musllinux*'
+            os: 'ubuntu-latest'
+          - name: 'py39-nocov (windows/AMD64)'
+            python: '3.9'
+            toxpython: 'python3.9'
+            python_arch: 'x64'
+            tox_env: 'py39-nocov'
+            cibw_arch: 'AMD64'
+            cibw_build: 'cp39-*'
+            os: 'windows-latest'
+          - name: 'py39-nocov (windows/x86)'
+            python: '3.9'
+            toxpython: 'python3.9'
+            python_arch: 'x86'
+            tox_env: 'py39-nocov'
+            cibw_arch: 'x86'
+            cibw_build: 'cp39-*'
+            os: 'windows-latest'
+          - name: 'py39-nocov (macos/x86_64)'
+            python: '3.9'
+            toxpython: 'python3.9'
+            python_arch: 'x64'
+            tox_env: 'py39-nocov'
+            cibw_arch: 'x86_64'
+            cibw_build: 'cp39-*'
+            os: 'macos-latest'
+          - name: 'py310-cover (ubuntu/x86_64)'
+            python: '3.10'
+            toxpython: 'python3.10'
+            python_arch: 'x64'
+            tox_env: 'py310-cover,codecov'
+            cibw_arch: 'x86_64'
+            cibw_build: false
+            os: 'ubuntu-latest'
+          - name: 'py310-cover (windows/AMD64)'
+            python: '3.10'
+            toxpython: 'python3.10'
+            python_arch: 'x64'
+            tox_env: 'py310-cover,codecov'
+            cibw_arch: 'AMD64'
+            cibw_build: false
+            os: 'windows-latest'
+          - name: 'py310-cover (macos/x86_64)'
+            python: '3.10'
+            toxpython: 'python3.10'
+            python_arch: 'x64'
+            tox_env: 'py310-cover,codecov'
+            cibw_arch: 'x86_64'
+            cibw_build: false
+            os: 'macos-latest'
+          - name: 'py310-nocov (ubuntu/x86_64/manylinux)'
+            python: '3.10'
+            toxpython: 'python3.10'
+            python_arch: 'x64'
+            tox_env: 'py310-nocov'
+            cibw_arch: 'x86_64'
+            cibw_build: 'cp310-*manylinux*'
+            os: 'ubuntu-latest'
+          - name: 'py310-nocov (ubuntu/x86_64/musllinux)'
+            python: '3.10'
+            toxpython: 'python3.10'
+            python_arch: 'x64'
+            tox_env: 'py310-nocov'
+            cibw_arch: 'x86_64'
+            cibw_build: 'cp310-*musllinux*'
+            os: 'ubuntu-latest'
+          - name: 'py310-nocov (ubuntu/aarch64/manylinux)'
+            python: '3.10'
+            toxpython: 'python3.10'
+            python_arch: 'x64'
+            tox_env: 'py310-nocov'
+            cibw_arch: 'aarch64'
+            cibw_build: 'cp310-*manylinux*'
+            os: 'ubuntu-latest'
+          - name: 'py310-nocov (ubuntu/aarch64/musllinux)'
+            python: '3.10'
+            toxpython: 'python3.10'
+            python_arch: 'x64'
+            tox_env: 'py310-nocov'
+            cibw_arch: 'aarch64'
+            cibw_build: 'cp310-*musllinux*'
+            os: 'ubuntu-latest'
+          - name: 'py310-nocov (windows/AMD64)'
+            python: '3.10'
+            toxpython: 'python3.10'
+            python_arch: 'x64'
+            tox_env: 'py310-nocov'
+            cibw_arch: 'AMD64'
+            cibw_build: 'cp310-*'
+            os: 'windows-latest'
+          - name: 'py310-nocov (windows/x86)'
+            python: '3.10'
+            toxpython: 'python3.10'
+            python_arch: 'x86'
+            tox_env: 'py310-nocov'
+            cibw_arch: 'x86'
+            cibw_build: 'cp310-*'
+            os: 'windows-latest'
+          - name: 'py310-nocov (macos/x86_64)'
+            python: '3.10'
+            toxpython: 'python3.10'
+            python_arch: 'x64'
+            tox_env: 'py310-nocov'
+            cibw_arch: 'x86_64'
+            cibw_build: 'cp310-*'
+            os: 'macos-latest'
+          - name: 'pypy37-cover (ubuntu/x86_64)'
+            python: 'pypy-3.7'
+            toxpython: 'pypy3.7'
+            python_arch: 'x64'
+            tox_env: 'pypy37-cover,codecov'
+            cibw_arch: 'x86_64'
+            cibw_build: false
+            os: 'ubuntu-latest'
+          - name: 'pypy37-cover (windows/AMD64)'
+            python: 'pypy-3.7'
+            toxpython: 'pypy3.7'
+            python_arch: 'x64'
+            tox_env: 'pypy37-cover,codecov'
+            cibw_arch: 'AMD64'
+            cibw_build: false
+            os: 'windows-latest'
+          - name: 'pypy37-cover (macos/x86_64)'
+            python: 'pypy-3.7'
+            toxpython: 'pypy3.7'
+            python_arch: 'x64'
+            tox_env: 'pypy37-cover,codecov'
+            cibw_arch: 'x86_64'
+            cibw_build: false
+            os: 'macos-latest'
+          - name: 'pypy37-nocov (ubuntu/x86_64/manylinux)'
+            python: 'pypy-3.7'
+            toxpython: 'pypy3.7'
+            python_arch: 'x64'
+            tox_env: 'pypy37-nocov'
+            cibw_arch: 'x86_64'
+            cibw_build: false
+            os: 'ubuntu-latest'
+          - name: 'pypy37-nocov (windows/AMD64)'
+            python: 'pypy-3.7'
+            toxpython: 'pypy3.7'
+            python_arch: 'x64'
+            tox_env: 'pypy37-nocov'
+            cibw_arch: 'AMD64'
+            cibw_build: false
+            os: 'windows-latest'
+          - name: 'pypy37-nocov (macos/x86_64)'
+            python: 'pypy-3.7'
+            toxpython: 'pypy3.7'
+            python_arch: 'x64'
+            tox_env: 'pypy37-nocov'
+            cibw_arch: 'x86_64'
+            cibw_build: false
+            os: 'macos-latest'
+          - name: 'pypy38-cover (ubuntu/x86_64)'
+            python: 'pypy-3.8'
+            toxpython: 'pypy3.8'
+            python_arch: 'x64'
+            tox_env: 'pypy38-cover,codecov'
+            cibw_arch: 'x86_64'
+            cibw_build: false
+            os: 'ubuntu-latest'
+          - name: 'pypy38-cover (windows/AMD64)'
+            python: 'pypy-3.8'
+            toxpython: 'pypy3.8'
+            python_arch: 'x64'
+            tox_env: 'pypy38-cover,codecov'
+            cibw_arch: 'AMD64'
+            cibw_build: false
+            os: 'windows-latest'
+          - name: 'pypy38-cover (macos/x86_64)'
+            python: 'pypy-3.8'
+            toxpython: 'pypy3.8'
+            python_arch: 'x64'
+            tox_env: 'pypy38-cover,codecov'
+            cibw_arch: 'x86_64'
+            cibw_build: false
+            os: 'macos-latest'
+          - name: 'pypy38-nocov (ubuntu/x86_64/manylinux)'
+            python: 'pypy-3.8'
+            toxpython: 'pypy3.8'
+            python_arch: 'x64'
+            tox_env: 'pypy38-nocov'
+            cibw_arch: 'x86_64'
+            cibw_build: false
+            os: 'ubuntu-latest'
+          - name: 'pypy38-nocov (windows/AMD64)'
+            python: 'pypy-3.8'
+            toxpython: 'pypy3.8'
+            python_arch: 'x64'
+            tox_env: 'pypy38-nocov'
+            cibw_arch: 'AMD64'
+            cibw_build: false
+            os: 'windows-latest'
+          - name: 'pypy38-nocov (macos/x86_64)'
+            python: 'pypy-3.8'
+            toxpython: 'pypy3.8'
+            python_arch: 'x64'
+            tox_env: 'pypy38-nocov'
+            cibw_arch: 'x86_64'
+            cibw_build: false
+            os: 'macos-latest'
+    steps:
+    - uses: docker/setup-qemu-action@v1
+      if: matrix.cibw_arch == 'aarch64'
+      with:
+        platforms: arm64
+    - uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+    - uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python }}
+        architecture: ${{ matrix.python_arch }}
+    - name: install dependencies
+      run: |
+        python -mpip install --progress-bar=off twine tox cibuildwheel -r ci/requirements.txt
+        virtualenv --version
+        pip --version
+        tox --version
+        pip list --format=freeze
+    - name: install dependencies (gdb)
+      if: >
+        !matrix.cibw_build && matrix.os == 'ubuntu'
+      run: >
+        sudo apt-get install gdb
+    - name: cibw build and test
+      if: matrix.cibw_build
+      run: cibuildwheel
+      env:
+        TOXPYTHON: '${{ matrix.toxpython }}'
+        CIBW_ARCHS: '${{ matrix.cibw_arch }}'
+        CIBW_BUILD: '${{ matrix.cibw_build }}'
+        CIBW_BUILD_VERBOSITY: '3'
+        CIBW_TEST_REQUIRES: >
+          tox
+          tox-direct
+        CIBW_TEST_COMMAND: >
+          cd {project} &&
+          tox --skip-pkg-install --direct-yolo -e ${{ matrix.tox_env }} -v
+        CIBW_TEST_COMMAND_WINDOWS: >
+          cd /d {project} &&
+          tox --skip-pkg-install --direct-yolo -e ${{ matrix.tox_env }} -v
+    - name: regular build and test
+      env:
+        TOXPYTHON: '${{ matrix.toxpython }}'
+      if: >
+        !matrix.cibw_build
+      run: >
+        tox -e ${{ matrix.tox_env }} -v
+    - name: check wheel
+      if: matrix.cibw_build
+      run: twine check wheelhouse/*.whl
+    - name: upload wheel
+      uses: actions/upload-artifact@v2
+      if: matrix.cibw_build
+      with:
+        path: wheelhouse/*.whl
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 6e974cb..ae2be47 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -5,16 +5,16 @@
 exclude: '^(\.tox|ci/templates|\.bumpversion\.cfg)(/|$)'
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: master
+    rev: v4.0.1
     hooks:
       - id: trailing-whitespace
       - id: end-of-file-fixer
       - id: debug-statements
   - repo: https://github.com/timothycrosley/isort
-    rev: master
+    rev: 5.9.3
     hooks:
       - id: isort
   - repo: https://gitlab.com/pycqa/flake8
-    rev: master
+    rev: 3.9.2
     hooks:
       - id: flake8
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index a83cd57..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,165 +0,0 @@
-language: python
-dist: xenial
-virt: lxd
-cache: false
-env:
-  global:
-    - LD_PRELOAD=libSegFault.so
-    - SEGFAULT_SIGNALS=all
-    - LANG=en_US.UTF-8
-    - TWINE_USERNAME=ionel
-matrix:
-  include:
-    - python: '3.6'
-      env:
-        - TOXENV=check
-    - python: '3.6'
-      env:
-        - TOXENV=docs
-    - os: osx
-      osx_image: xcode11
-      language: generic
-      env:
-        - TOXENV=py27-cover
-    - env:
-        - TOXENV=py27-cover,codecov,extension-coveralls,coveralls
-      python: '2.7'
-      arch: arm64
-    - env:
-        - TOXENV=py27-cover,codecov,extension-coveralls,coveralls
-      python: '2.7'
-      arch: amd64
-    - os: osx
-      osx_image: xcode11
-      language: generic
-      env:
-        - TOXENV=py27-nocov
-        - WHEEL_PATH=.tox/dist
-    - env:
-        - TOXENV=py27-nocov
-        - WHEEL_MANYLINUX="1 cp27"
-      python: '2.7'
-      arch: amd64
-    - env:
-        - TOXENV=py36-cover,codecov,extension-coveralls,coveralls
-      python: '3.6'
-      arch: arm64
-    - env:
-        - TOXENV=py36-cover,codecov,extension-coveralls,coveralls
-      python: '3.6'
-      arch: amd64
-    - env:
-        - TOXENV=py36-nocov
-        - WHEEL_MANYLINUX="2014-arm cp36"
-      python: '3.6'
-      arch: arm64
-    - env:
-        - TOXENV=py36-nocov
-        - WHEEL_MANYLINUX="1 cp36"
-      python: '3.6'
-      arch: amd64
-    - env:
-        - TOXENV=py37-cover,codecov,extension-coveralls,coveralls
-      python: '3.7'
-      arch: arm64
-    - env:
-        - TOXENV=py37-cover,codecov,extension-coveralls,coveralls
-      python: '3.7'
-      arch: amd64
-    - env:
-        - TOXENV=py37-nocov
-        - WHEEL_MANYLINUX="2014-arm cp37"
-      python: '3.7'
-      arch: arm64
-    - env:
-        - TOXENV=py37-nocov
-        - WHEEL_MANYLINUX="1 cp37"
-      python: '3.7'
-      arch: amd64
-    - env:
-        - TOXENV=py38-cover,codecov,extension-coveralls,coveralls
-      python: '3.8'
-      arch: arm64
-    - env:
-        - TOXENV=py38-cover,codecov,extension-coveralls,coveralls
-      python: '3.8'
-      arch: amd64
-    - env:
-        - TOXENV=py38-nocov
-        - WHEEL_MANYLINUX="2014-arm cp38"
-      python: '3.8'
-      arch: arm64
-    - env:
-        - TOXENV=py38-nocov
-        - WHEEL_MANYLINUX="1 cp38"
-      python: '3.8'
-      arch: amd64
-    - os: osx
-      osx_image: xcode11
-      language: generic
-      env:
-        - TOXENV=py39-cover
-    - env:
-        - TOXENV=py39-cover,codecov,extension-coveralls,coveralls
-      python: '3.9'
-      arch: arm64
-    - env:
-        - TOXENV=py39-cover,codecov,extension-coveralls,coveralls
-      python: '3.9'
-      arch: amd64
-    - os: osx
-      osx_image: xcode11
-      language: generic
-      env:
-        - TOXENV=py39-nocov
-        - WHEEL_PATH=.tox/dist
-    - env:
-        - TOXENV=py39-nocov
-        - WHEEL_MANYLINUX="2014-arm cp39"
-      python: '3.9'
-      arch: arm64
-    - env:
-        - TOXENV=py39-nocov
-        - WHEEL_MANYLINUX="1 cp39"
-      python: '3.9'
-      arch: amd64
-before_install:
-  - python --version
-  - uname -a
-  - lsb_release -a || true
-  - |
-    if [[ $TRAVIS_OS_NAME == 'osx' ]]; then
-      brew update-reset
-      [[ $TOXENV =~ py3 ]] && brew upgrade python
-      [[ $TOXENV =~ py2 ]] && brew install python@2
-      export PATH="/usr/local/opt/python/libexec/bin:${PATH}"
-    fi
-install:
-  - python -mpip uninstall virtualenv --yes
-  - python -mpip uninstall virtualenv --yes
-  - python -mpip install --progress-bar=off --upgrade --ignore-installed -rci/requirements.txt
-  - virtualenv --version
-  - pip --version
-  - tox --version
-script:
-  - |
-    (
-    set -eux
-    if [[ -n ${WHEEL_MANYLINUX:-} ]]; then
-      docker run --rm --user $UID -v $(pwd):/code ionelmc/manylinux:manylinux$WHEEL_MANYLINUX
-      tox --installpkg wheelhouse/*.whl -v
-      export WHEEL_PATH=wheelhouse
-    else
-      tox -v
-    fi
-    if [[ -n ${WHEEL_PATH:-} ]]; then
-      twine upload --repository-url https://test.pypi.org/legacy/ --skip-existing $WHEEL_PATH/*.whl
-    fi
-    )
-after_failure:
-  - cat .tox/log/*
-  - cat .tox/*/log/*
-notifications:
-  email:
-    on_success: never
-    on_failure: always
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 20ad4b2..2918eac 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -2,6 +2,19 @@
 Changelog
 =========
 
+1.7.0 (2021-12-15)
+------------------
+
+* Switched CI to GitHub Actions, this has a couple consequences:
+
+  * Support for Python 2.7 is dropped. You can still install it there but it's not tested anymore and
+    Python 2 specific handling will be removed at some point.
+  * Linux wheels are now provided in `musllinux` and `manylinux2014` variants.
+
+* Fixed ``__index__`` to fallback to ``int`` if the wrapped object doesn't have an ``__index__`` method.
+  This prevents situations where code using a proxy would otherwise likely just call ``int`` had the object
+  not have an ``__index__`` method.
+
 1.6.0 (2021-03-22)
 ------------------
 
diff --git a/CONTRIBUTING.rst b/CONTRIBUTING.rst
index 74587c9..99f0ea4 100644
--- a/CONTRIBUTING.rst
+++ b/CONTRIBUTING.rst
@@ -68,16 +68,12 @@ If you need some code review or feedback while you're developing the code just m
 
 For merging, you should:
 
-1. Include passing tests (run ``tox``) [1]_.
+1. Include passing tests (run ``tox``).
 2. Update documentation when there's new API, functionality etc.
 3. Add a note to ``CHANGELOG.rst`` about the changes.
 4. Add yourself to ``AUTHORS.rst``.
 
-.. [1] If you don't have all the necessary python versions available locally you can rely on Travis - it will
-       `run the tests <https://travis-ci.com/github/ionelmc/python-lazy-object-proxy/pull_requests>`_
-       for each change you add in the pull request.
 
-       It will be slower though ...
 
 Tips
 ----
diff --git a/README.rst b/README.rst
index 8e70976..196e115 100644
--- a/README.rst
+++ b/README.rst
@@ -10,22 +10,18 @@ Overview
     * - docs
       - |docs|
     * - tests
-      - | |travis| |appveyor| |requires|
+      - | |github-actions| |requires|
         | |coveralls| |codecov|
     * - package
       - | |version| |wheel| |supported-versions| |supported-implementations|
         | |commits-since|
 .. |docs| image:: https://readthedocs.org/projects/python-lazy-object-proxy/badge/?style=flat
-    :target: https://readthedocs.org/projects/python-lazy-object-proxy
+    :target: https://python-lazy-object-proxy.readthedocs.io/
     :alt: Documentation Status
 
-.. |travis| image:: https://api.travis-ci.com/ionelmc/python-lazy-object-proxy.svg?branch=master
-    :alt: Travis-CI Build Status
-    :target: https://travis-ci.com/github/ionelmc/python-lazy-object-proxy
-
-.. |appveyor| image:: https://ci.appveyor.com/api/projects/status/github/ionelmc/python-lazy-object-proxy?branch=master&svg=true
-    :alt: AppVeyor Build Status
-    :target: https://ci.appveyor.com/project/ionelmc/python-lazy-object-proxy
+.. |github-actions| image:: https://github.com/ionelmc/python-lazy-object-proxy/actions/workflows/github-actions.yml/badge.svg
+    :alt: GitHub Actions Build Status
+    :target: https://github.com/ionelmc/python-lazy-object-proxy/actions
 
 .. |requires| image:: https://requires.io/github/ionelmc/python-lazy-object-proxy/requirements.svg?branch=master
     :alt: Requirements Status
@@ -55,9 +51,9 @@ Overview
     :alt: Supported implementations
     :target: https://pypi.org/project/lazy-object-proxy
 
-.. |commits-since| image:: https://img.shields.io/github/commits-since/ionelmc/python-lazy-object-proxy/v1.6.0.svg
+.. |commits-since| image:: https://img.shields.io/github/commits-since/ionelmc/python-lazy-object-proxy/v1.7.0.svg
     :alt: Commits since latest release
-    :target: https://github.com/ionelmc/python-lazy-object-proxy/compare/v1.5.2...master
+    :target: https://github.com/ionelmc/python-lazy-object-proxy/compare/v1.7.0...master
 
 
 
diff --git a/ci/appveyor-download.py b/ci/appveyor-download.py
deleted file mode 100755
index 440b422..0000000
--- a/ci/appveyor-download.py
+++ /dev/null
@@ -1,109 +0,0 @@
-#!/usr/bin/env python
-"""
-Use the AppVeyor API to download Windows artifacts.
-
-Taken from: https://bitbucket.org/ned/coveragepy/src/tip/ci/download_appveyor.py
-# Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0
-# For details: https://bitbucket.org/ned/coveragepy/src/default/NOTICE.txt
-"""
-from __future__ import unicode_literals
-
-import argparse
-import os
-import zipfile
-
-import requests
-
-
-def make_auth_headers():
-    """Make the authentication headers needed to use the Appveyor API."""
-    path = os.path.expanduser("~/.appveyor.token")
-    if not os.path.exists(path):
-        raise RuntimeError(
-            "Please create a file named `.appveyor.token` in your home directory. "
-            "You can get the token from https://ci.appveyor.com/api-token"
-        )
-    with open(path) as f:
-        token = f.read().strip()
-
-    headers = {
-        'Authorization': 'Bearer {}'.format(token),
-    }
-    return headers
-
-
-def download_latest_artifacts(account_project, build_id):
-    """Download all the artifacts from the latest build."""
-    if build_id is None:
-        url = "https://ci.appveyor.com/api/projects/{}".format(account_project)
-    else:
-        url = "https://ci.appveyor.com/api/projects/{}/build/{}".format(account_project, build_id)
-    build = requests.get(url, headers=make_auth_headers()).json()
-    jobs = build['build']['jobs']
-    print(u"Build {0[build][version]}, {1} jobs: {0[build][message]}".format(build, len(jobs)))
-
-    for job in jobs:
-        name = job['name']
-        print(u"  {0}: {1[status]}, {1[artifactsCount]} artifacts".format(name, job))
-
-        url = "https://ci.appveyor.com/api/buildjobs/{}/artifacts".format(job['jobId'])
-        response = requests.get(url, headers=make_auth_headers())
-        artifacts = response.json()
-
-        for artifact in artifacts:
-            is_zip = artifact['type'] == "Zip"
-            filename = artifact['fileName']
-            print(u"    {0}, {1} bytes".format(filename, artifact['size']))
-
-            url = "https://ci.appveyor.com/api/buildjobs/{}/artifacts/{}".format(job['jobId'], filename)
-            download_url(url, filename, make_auth_headers())
-
-            if is_zip:
-                unpack_zipfile(filename)
-                os.remove(filename)
-
-
-def ensure_dirs(filename):
-    """Make sure the directories exist for `filename`."""
-    dirname = os.path.dirname(filename)
-    if dirname and not os.path.exists(dirname):
-        os.makedirs(dirname)
-
-
-def download_url(url, filename, headers):
-    """Download a file from `url` to `filename`."""
-    ensure_dirs(filename)
-    response = requests.get(url, headers=headers, stream=True)
-    if response.status_code == 200:
-        with open(filename, 'wb') as f:
-            for chunk in response.iter_content(16 * 1024):
-                f.write(chunk)
-    else:
-        print(u"    Error downloading {}: {}".format(url, response))
-
-
-def unpack_zipfile(filename):
-    """Unpack a zipfile, using the names in the zip."""
-    with open(filename, 'rb') as fzip:
-        z = zipfile.ZipFile(fzip)
-        for name in z.namelist():
-            print(u"      extracting {}".format(name))
-            ensure_dirs(name)
-            z.extract(name)
-
-
-parser = argparse.ArgumentParser(description='Download artifacts from AppVeyor.')
-parser.add_argument('--id',
-                    metavar='PROJECT_ID',
-                    default='ionelmc/python-lazy-object-proxy',
-                    help='Project ID in AppVeyor.')
-parser.add_argument('build',
-                    nargs='?',
-                    metavar='BUILD_ID',
-                    help='Build ID in AppVeyor. Eg: master-123')
-
-if __name__ == "__main__":
-    # import logging
-    # logging.basicConfig(level="DEBUG")
-    args = parser.parse_args()
-    download_latest_artifacts(args.id, args.build)
diff --git a/ci/appveyor-with-compiler.cmd b/ci/appveyor-with-compiler.cmd
deleted file mode 100644
index 5093538..0000000
--- a/ci/appveyor-with-compiler.cmd
+++ /dev/null
@@ -1,12 +0,0 @@
-SET COMMAND_TO_RUN=%*
-
-IF "%PYTHON_VERSION%"=="2.7" GOTO legacy
-GOTO main
-
-:legacy
-powershell -Command "Invoke-WebRequest https://download.microsoft.com/download/7/9/6/796EF2E4-801B-4FC4-AB28-B59FBF6D907B/VCForPython27.msi -OutFile VCForPython27.msi"
-msiexec /i VCForPython27.msi /quiet /qn /norestart
-
-:main
-ECHO Executing: %COMMAND_TO_RUN%
-CALL %COMMAND_TO_RUN% || EXIT 1
diff --git a/ci/bootstrap.py b/ci/bootstrap.py
index 2eb7723..323a44c 100755
--- a/ci/bootstrap.py
+++ b/ci/bootstrap.py
@@ -11,8 +11,10 @@
 from os.path import dirname
 from os.path import exists
 from os.path import join
+from os.path import relpath
 
 base_path = dirname(dirname(abspath(__file__)))
+templates_path = join(base_path, "ci", "templates")
 
 
 def check_call(args):
@@ -54,7 +56,7 @@ def main():
     print("Project path: {0}".format(base_path))
 
     jinja = jinja2.Environment(
-        loader=jinja2.FileSystemLoader(join(base_path, "ci", "templates")),
+        loader=jinja2.FileSystemLoader(templates_path),
         trim_blocks=True,
         lstrip_blocks=True,
         keep_trailing_newline=True
@@ -71,10 +73,12 @@ def main():
     ]
     tox_environments = [line for line in tox_environments if line.startswith('py')]
 
-    for name in os.listdir(join("ci", "templates")):
-        with open(join(base_path, name), "w") as fh:
-            fh.write(jinja.get_template(name).render(tox_environments=tox_environments))
-        print("Wrote {}".format(name))
+    for root, _, files in os.walk(templates_path):
+        for name in files:
+            relative = relpath(root, templates_path)
+            with open(join(base_path, relative, name), "w") as fh:
+                fh.write(jinja.get_template(join(relative, name)).render(tox_environments=tox_environments))
+            print("Wrote {}".format(name))
     print("DONE.")
 
 
diff --git a/ci/requirements.txt b/ci/requirements.txt
index b8aff6a..d99ac18 100644
--- a/ci/requirements.txt
+++ b/ci/requirements.txt
@@ -1,7 +1,4 @@
-virtualenv>=16.6.0
+virtualenv>=20.4.7
 pip>=19.1.1
 setuptools>=18.0.1
 six>=1.14.0
-importlib-metadata>=1.0
-twine
-tox-wheel
diff --git a/ci/templates/.appveyor.yml b/ci/templates/.appveyor.yml
deleted file mode 100644
index ff8e339..0000000
--- a/ci/templates/.appveyor.yml
+++ /dev/null
@@ -1,59 +0,0 @@
-version: '{branch}-{build}'
-build: off
-image: Visual Studio 2019
-environment:
-  global:
-    TWINE_USERNAME: ionel
-    COVERALLS_EXTRAS: '-v'
-    COVERALLS_REPO_TOKEN: 6picUzuGNWKI5w3rsEyZGNvyMZ47Cz9hZ
-  matrix:
-    - TOXENV: check
-      TOXPYTHON: C:\Python36\python.exe
-      PYTHON_HOME: C:\Python36
-      PYTHON_VERSION: '3.6'
-      PYTHON_ARCH: '32'
-{% for env in tox_environments %}
-{% if env.startswith(('py2', 'py3')) %}
-    - TOXENV: {{ env }}{% if env.endswith('-cover') %},codecov,coveralls{% endif %}{{ "" }}
-      TOXPYTHON: C:\Python{{ env[2:4] }}\python.exe
-      PYTHON_HOME: C:\Python{{ env[2:4] }}
-      PYTHON_VERSION: '{{ env[2] }}.{{ env[3] }}'
-      PYTHON_ARCH: '32'
-{% if 'nocov' in env %}
-      WHEEL_PATH: .tox/dist
-{% endif %}
-    - TOXENV: {{ env }}{% if env.endswith('-cover') %},codecov,coveralls{% endif %}{{ "" }}
-      TOXPYTHON: C:\Python{{ env[2:4] }}-x64\python.exe
-      PYTHON_HOME: C:\Python{{ env[2:4] }}-x64
-      PYTHON_VERSION: '{{ env[2] }}.{{ env[3] }}'
-      PYTHON_ARCH: '64'
-{% if 'nocov' in env %}
-      WHEEL_PATH: .tox/dist
-{% endif %}
-{% endif %}{% endfor %}
-init:
-  - ps: echo $env:TOXENV
-  - ps: ls C:\Python*
-install:
-  - '%PYTHON_HOME%\python -mpip install --progress-bar=off -rci/requirements.txt'
-  - '%PYTHON_HOME%\Scripts\virtualenv --version'
-  - '%PYTHON_HOME%\Scripts\pip --version'
-  - '%PYTHON_HOME%\Scripts\tox --version'
-test_script:
-  - ps: |
-      Set-PSDebug -Trace 1
-      $ErrorActionPreference = "Stop"
-      if ($Env:WHEEL_PATH) {
-        cmd /E:ON /V:ON /C .\ci\appveyor-with-compiler.cmd $Env:PYTHON_HOME\Scripts\tox --wheel
-        iex "$Env:PYTHON_HOME\Scripts\twine check $Env:WHEEL_PATH/*.whl"
-        iex "$Env:PYTHON_HOME\Scripts\twine upload --repository-url https://test.pypi.org/legacy/ --skip-existing $Env:WHEEL_PATH/*.whl"
-      } else {
-        cmd /E:ON /V:ON /C .\ci\appveyor-with-compiler.cmd $Env:PYTHON_HOME\Scripts\tox
-      }
-on_failure:
-  - ps: dir "env:"
-  - ps: get-content .tox\*\log\*
-
-### To enable remote debugging uncomment this (also, see: http://www.appveyor.com/docs/how-to/rdp-to-build-worker):
-# on_finish:
-#   - ps: $blockRdp = $true; iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))
diff --git a/ci/templates/.github/workflows/github-actions.yml b/ci/templates/.github/workflows/github-actions.yml
new file mode 100644
index 0000000..5cd4146
--- /dev/null
+++ b/ci/templates/.github/workflows/github-actions.yml
@@ -0,0 +1,115 @@
+name: build
+on: [push, pull_request]
+jobs:
+  test:
+    name: {{ '${{ matrix.name }}' }}
+    runs-on: {{ '${{ matrix.os }}' }}
+    timeout-minutes: 30
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - name: 'check'
+            python: '3.9'
+            toxpython: 'python3.9'
+            tox_env: 'check'
+            os: 'ubuntu-latest'
+          - name: 'docs'
+            python: '3.9'
+            toxpython: 'python3.9'
+            tox_env: 'docs'
+            os: 'ubuntu-latest'
+{% for env in tox_environments %}
+{% set prefix = env.split('-')[0] -%}
+{% if prefix.startswith('pypy') %}
+{% set python %}pypy-{{ prefix[4] }}.{{ prefix[5] }}{% endset %}
+{% set cpython %}pp{{ prefix[4:5] }}{% endset %}
+{% set toxpython %}pypy{{ prefix[4] }}.{{ prefix[5] }}{% endset %}
+{% else %}
+{% set python %}{{ prefix[2] }}.{{ prefix[3:] }}{% endset %}
+{% set cpython %}cp{{ prefix[2:] }}{% endset %}
+{% set toxpython %}python{{ prefix[2] }}.{{ prefix[3:] }}{% endset %}
+{% endif %}
+{% for os, python_arch, cibw_arch, wheel_arch, include_cover in [
+    ['ubuntu', 'x64', 'x86_64', '*manylinux*', True],
+    ['ubuntu', 'x64', 'x86_64', '*musllinux*', False],
+    ['ubuntu', 'x64', 'aarch64', '*manylinux*', False],
+    ['ubuntu', 'x64', 'aarch64', '*musllinux*', False],
+    ['windows', 'x64', 'AMD64', '*', True],
+    ['windows', 'x86', 'x86', '*', False],
+    ['macos', 'x64', 'x86_64', '*', True],
+] %}
+{% if include_cover or ('nocov' in env and not prefix.startswith('pypy')) %}
+{% set wheel_suffix = 'nocov' in env and wheel_arch.strip('*') %}
+{% set name_suffix = '/' + wheel_suffix if wheel_suffix else '' %}
+          - name: '{{ env }} ({{ os }}/{{ cibw_arch }}{{ name_suffix }})'
+            python: '{{ python }}'
+            toxpython: '{{ toxpython }}'
+            python_arch: '{{ python_arch }}'
+            tox_env: '{{ env }}{% if 'cover' in env %},codecov{% endif %}'
+            cibw_arch: '{{ cibw_arch }}'
+{% if 'nocov' in env and not prefix.startswith('pypy') %}
+            cibw_build: '{{ cpython }}-{{ wheel_arch }}'
+{% else %}
+            cibw_build: false
+{% endif %}
+            os: '{{ os }}-latest'
+{% endif %}
+{% endfor %}
+{% endfor %}
+    steps:
+    - uses: docker/setup-qemu-action@v1
+      if: matrix.cibw_arch == 'aarch64'
+      with:
+        platforms: arm64
+    - uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+    - uses: actions/setup-python@v2
+      with:
+        python-version: {{ '${{ matrix.python }}' }}
+        architecture: {{ '${{ matrix.python_arch }}' }}
+    - name: install dependencies
+      run: |
+        python -mpip install --progress-bar=off twine tox cibuildwheel -r ci/requirements.txt
+        virtualenv --version
+        pip --version
+        tox --version
+        pip list --format=freeze
+    - name: install dependencies (gdb)
+      if: >
+        !matrix.cibw_build && matrix.os == 'ubuntu'
+      run: >
+        sudo apt-get install gdb
+    - name: cibw build and test
+      if: matrix.cibw_build
+      run: cibuildwheel
+      env:
+        TOXPYTHON: '{{ '${{ matrix.toxpython }}' }}'
+        CIBW_ARCHS: '{{ '${{ matrix.cibw_arch }}' }}'
+        CIBW_BUILD: '{{ '${{ matrix.cibw_build }}' }}'
+        CIBW_BUILD_VERBOSITY: '3'
+        CIBW_TEST_REQUIRES: >
+          tox
+          tox-direct
+        CIBW_TEST_COMMAND: >
+          cd {project} &&
+          tox --skip-pkg-install --direct-yolo -e {{ '${{ matrix.tox_env }}' }} -v
+        CIBW_TEST_COMMAND_WINDOWS: >
+          cd /d {project} &&
+          tox --skip-pkg-install --direct-yolo -e {{ '${{ matrix.tox_env }}' }} -v
+    - name: regular build and test
+      env:
+        TOXPYTHON: '{{ '${{ matrix.toxpython }}' }}'
+      if: >
+        !matrix.cibw_build
+      run: >
+        tox -e {{ '${{ matrix.tox_env }}' }} -v
+    - name: check wheel
+      if: matrix.cibw_build
+      run: twine check wheelhouse/*.whl
+    - name: upload wheel
+      uses: actions/upload-artifact@v2
+      if: matrix.cibw_build
+      with:
+        path: wheelhouse/*.whl
diff --git a/ci/templates/.travis.yml b/ci/templates/.travis.yml
deleted file mode 100644
index 80afcea..0000000
--- a/ci/templates/.travis.yml
+++ /dev/null
@@ -1,88 +0,0 @@
-language: python
-dist: xenial
-virt: lxd
-cache: false
-env:
-  global:
-    - LD_PRELOAD=libSegFault.so
-    - SEGFAULT_SIGNALS=all
-    - LANG=en_US.UTF-8
-    - TWINE_USERNAME=ionel
-matrix:
-  include:
-    - python: '3.6'
-      env:
-        - TOXENV=check
-    - python: '3.6'
-      env:
-        - TOXENV=docs
-{%- for env in tox_environments %}{{ '' }}
-{%- if 'py39' in env or 'py27' in env %}{{ '' }}
-    - os: osx
-      osx_image: xcode11
-      language: generic
-      env:
-        - TOXENV={{ env }}
-{%- if 'nocov' in env %}{{ '' }}
-        - WHEEL_PATH=.tox/dist
-{%- endif %}
-{%- endif %}{{ '' }}
-{%- for arch in ['arm64', 'amd64'] %}{{ '' }}
-{%- if 'pypy' not in env and (arch == 'amd64' or env.startswith('py3') or 'cover' in env) %}{{ '' }}
-    - env:
-        - TOXENV={{ env }}{% if 'cover' in env %},codecov,extension-coveralls,coveralls{% endif %}
-{%- if 'pypy' not in env and 'nocov' in env %}{{ '' }}
-        - WHEEL_MANYLINUX="{% if arch == 'arm64' %}2014-arm{% else %}1{% endif %}{{ '' }} cp{{ env.split('-')[0][2:] }}"
-{%- endif %}
-{%- if env.startswith('pypy3') %}{{ '' }}
-        - TOXPYTHON=pypy3
-      python: 'pypy3'
-{%- elif env.startswith('pypy') %}{{ '' }}
-      python: 'pypy'
-{%- else %}{{ '' }}
-      python: '{{ '{0[2]}.{0[3]}'.format(env) }}'
-{%- endif %}{{ '' }}
-      arch: {{ arch }}
-{%- endif %}{{ '' }}
-{%- endfor %}{{ '' }}
-{%- endfor %}{{ '' }}
-before_install:
-  - python --version
-  - uname -a
-  - lsb_release -a || true
-  - |
-    if [[ $TRAVIS_OS_NAME == 'osx' ]]; then
-      brew update-reset
-      [[ $TOXENV =~ py3 ]] && brew upgrade python
-      [[ $TOXENV =~ py2 ]] && brew install python@2
-      export PATH="/usr/local/opt/python/libexec/bin:${PATH}"
-    fi
-install:
-  - python -mpip uninstall virtualenv --yes
-  - python -mpip uninstall virtualenv --yes
-  - python -mpip install --progress-bar=off --upgrade --ignore-installed -rci/requirements.txt
-  - virtualenv --version
-  - pip --version
-  - tox --version
-script:
-  - |
-    (
-    set -eux
-    if [[ -n ${WHEEL_MANYLINUX:-} ]]; then
-      docker run --rm --user $UID -v $(pwd):/code ionelmc/manylinux:manylinux$WHEEL_MANYLINUX
-      tox --installpkg wheelhouse/*.whl -v
-      export WHEEL_PATH=wheelhouse
-    else
-      tox -v
-    fi
-    if [[ -n ${WHEEL_PATH:-} ]]; then
-      twine upload --repository-url https://test.pypi.org/legacy/ --skip-existing $WHEEL_PATH/*.whl
-    fi
-    )
-after_failure:
-  - cat .tox/log/*
-  - cat .tox/*/log/*
-notifications:
-  email:
-    on_success: never
-    on_failure: always
diff --git a/docs/conf.py b/docs/conf.py
index 0e01416..94e09ff 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -27,7 +27,7 @@
     version = release = get_distribution('lazy_object_proxy').version
 except Exception:
     traceback.print_exc()
-    version = release = '1.6.0'
+    version = release = '1.7.0'
 
 pygments_style = 'trac'
 templates_path = ['.']
@@ -45,7 +45,7 @@
 html_last_updated_fmt = '%b %d, %Y'
 html_split_index = False
 html_sidebars = {
-   '**': ['searchbox.html', 'globaltoc.html', 'sourcelink.html'],
+    '**': ['searchbox.html', 'globaltoc.html', 'sourcelink.html'],
 }
 html_short_title = '%s-%s' % (project, version)
 
diff --git a/pyproject.toml b/pyproject.toml
index e69394c..23cf6d7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,5 +2,5 @@
 requires = [
     "setuptools>=30.3.0",
     "wheel",
-    "setuptools_scm>=3.3.1,<6.0",
+    "setuptools_scm>=3.3.1",
 ]
diff --git a/setup.cfg b/setup.cfg
index bae99d7..d55819a 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [options]
 setup_requires =
-  setuptools_scm>=3.3.1,<6.0
+  setuptools_scm>=3.3.1
 
 [flake8]
 max-line-length = 140
diff --git a/setup.py b/setup.py
index 40a7fd5..9038ce2 100755
--- a/setup.py
+++ b/setup.py
@@ -7,6 +7,7 @@
 import os
 import platform
 import re
+import sys
 from glob import glob
 from os.path import basename
 from os.path import dirname
@@ -18,6 +19,7 @@
 from setuptools import find_packages
 from setuptools import setup
 from setuptools.command.build_ext import build_ext
+from setuptools.dist import Distribution
 
 # Enable code coverage for C code: we can't use CFLAGS=-coverage in tox.ini, since that may mess with compiling
 # dependencies (e.g. numpy). Therefore we set SETUPPY_CFLAGS=-coverage in tox.ini and copy it to CFLAGS here (after
@@ -30,7 +32,7 @@
     LFLAGS = ''
 
 
-class optional_build_ext(build_ext):
+class OptionalBuildExt(build_ext):
     """Allow the building of C extensions to fail."""
     def run(self):
         try:
@@ -62,12 +64,18 @@ def read(*names, **kwargs):
         return fh.read()
 
 
+class BinaryDistribution(Distribution):
+    """Distribution which almost always forces a binary package with platform name"""
+    def has_ext_modules(self):
+        return super().has_ext_modules() or 'SETUP_PY_ALLOW_PURE' not in os.environ
+
+
 setup(
     name='lazy-object-proxy',
     use_scm_version={
         'local_scheme': 'dirty-tag',
         'write_to': 'src/lazy_object_proxy/_version.py',
-        'fallback_version': '1.6.0',
+        'fallback_version': '1.7.0',
     },
     license='BSD-2-Clause',
     description='A fast and thorough lazy object proxy.',
@@ -92,12 +100,12 @@ def read(*names, **kwargs):
         'Operating System :: POSIX',
         'Operating System :: Microsoft :: Windows',
         'Programming Language :: Python',
-        'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
+        'Programming Language :: Python :: 3.10',
         'Programming Language :: Python :: Implementation :: CPython',
         'Programming Language :: Python :: Implementation :: PyPy',
         # uncomment if you test on these interpreters:
@@ -123,8 +131,8 @@ def read(*names, **kwargs):
         #   'rst': ['docutils>=0.11'],
         #   ':python_version=="2.6"': ['argparse'],
     },
-    cmdclass={'build_ext': optional_build_ext},
-    ext_modules=[
+    cmdclass={'build_ext': OptionalBuildExt},
+    ext_modules=[] if hasattr(sys, 'pypy_version_info') else [
         Extension(
             splitext(relpath(path, 'src').replace(os.sep, '.'))[0],
             sources=[path],
@@ -135,4 +143,5 @@ def read(*names, **kwargs):
         for root, _, _ in os.walk('src')
         for path in glob(join(root, '*.c'))
     ],
+    distclass=BinaryDistribution,
 )
diff --git a/src/lazy_object_proxy/__init__.py b/src/lazy_object_proxy/__init__.py
index db37c85..2de91cf 100644
--- a/src/lazy_object_proxy/__init__.py
+++ b/src/lazy_object_proxy/__init__.py
@@ -18,6 +18,6 @@
 try:
     from ._version import version as __version__
 except ImportError:
-    __version__ = '1.6.0'
+    __version__ = '1.7.0'
 
 __all__ = "Proxy",
diff --git a/src/lazy_object_proxy/simple.py b/src/lazy_object_proxy/simple.py
index ea5cf8a..724998d 100644
--- a/src/lazy_object_proxy/simple.py
+++ b/src/lazy_object_proxy/simple.py
@@ -233,7 +233,13 @@ def __ror__(self, other):
     __float__ = make_proxy_method(float)
     __oct__ = make_proxy_method(oct)
     __hex__ = make_proxy_method(hex)
-    __index__ = make_proxy_method(operator.index)
+
+    def __index__(self):
+        if hasattr(self.__wrapped__, '__index__'):
+            return operator.index(self.__wrapped__)
+        else:
+            return int(self.__wrapped__)
+
     __len__ = make_proxy_method(len)
     __contains__ = make_proxy_method(operator.contains)
     __getitem__ = make_proxy_method(operator.getitem)
diff --git a/src/lazy_object_proxy/slots.py b/src/lazy_object_proxy/slots.py
index 41cee25..24d2f7e 100644
--- a/src/lazy_object_proxy/slots.py
+++ b/src/lazy_object_proxy/slots.py
@@ -392,7 +392,10 @@ def __hex__(self):
         return hex(self.__wrapped__)
 
     def __index__(self):
-        return operator.index(self.__wrapped__)
+        if hasattr(self.__wrapped__, '__index__'):
+            return operator.index(self.__wrapped__)
+        else:
+            return int(self.__wrapped__)
 
     def __len__(self):
         return len(self.__wrapped__)
diff --git a/tests/test_async_py3.py b/tests/test_async_py3.py
index dba934f..8ca24e1 100644
--- a/tests/test_async_py3.py
+++ b/tests/test_async_py3.py
@@ -12,6 +12,8 @@
 
 from lazy_object_proxy.utils import await_
 
+pypyxfail = pytest.mark.xfail('hasattr(sys, "pypy_version_info")')
+
 
 class AsyncYieldFrom:
     def __init__(self, obj):
@@ -256,9 +258,12 @@ async def func(): pass
     # Test that PyCoro_Type and _PyCoroWrapper_Type types were properly
     # initialized
     assert '__await__' in dir(coro)
-    assert '__iter__' in dir(coro.__await__())
-    assert 'coroutine_wrapper' in str(coro.__await__())
-    coro.close()  # avoid RuntimeWarning
+    awaitable = coro.__await__()
+    assert '__iter__' in dir(awaitable)
+    assert 'coroutine_wrapper' in str(awaitable)
+    # avoid RuntimeWarnings
+    awaitable.close()
+    coro.close()
 
 
 def test_func_12(lop):
@@ -825,6 +830,7 @@ async def func():
         run_async(lop.Proxy(func))
 
 
+@pypyxfail
 def test_with_6(lop):
     class CM:
         def __aenter__(self):
@@ -843,6 +849,7 @@ async def foo():
         run_async(lop.Proxy(foo))
 
 
+@pypyxfail
 def test_with_7(lop):
     class CM:
         async def __aenter__(self):
@@ -867,6 +874,7 @@ async def foo():
         pytest.fail('invalid asynchronous context manager did not fail')
 
 
+@pypyxfail
 def test_with_8(lop):
     CNT = 0
 
@@ -1112,6 +1120,7 @@ async def test3():
            ['what?', 'end']
 
 
+@pypyxfail
 def test_for_2(lop):
     tup = (1, 2, 3)
     refs_before = sys.getrefcount(tup)
@@ -1126,6 +1135,7 @@ async def foo():
     assert sys.getrefcount(tup) == refs_before
 
 
+@pypyxfail
 def test_for_3(lop):
     class I:
         def __aiter__(self):
@@ -1144,6 +1154,7 @@ async def foo():
     assert sys.getrefcount(aiter) == refs_before
 
 
+@pypyxfail
 def test_for_4(lop):
     class I:
         def __aiter__(self):
@@ -1165,6 +1176,7 @@ async def foo():
     assert sys.getrefcount(aiter) == refs_before
 
 
+@pypyxfail
 def test_for_6(lop):
     I = 0
 
diff --git a/tests/test_lazy_object_proxy.py b/tests/test_lazy_object_proxy.py
index 8bd3532..60555de 100644
--- a/tests/test_lazy_object_proxy.py
+++ b/tests/test_lazy_object_proxy.py
@@ -1,11 +1,11 @@
 from __future__ import print_function
 
 import gc
-import imp
 import os
 import pickle
 import platform
 import sys
+import types
 import weakref
 from datetime import date
 from datetime import datetime
@@ -31,7 +31,7 @@ def target():
     pass
 """
 
-objects = imp.new_module('objects')
+objects = types.ModuleType('objects')
 exec_(OBJECTS_CODE, objects.__dict__, objects.__dict__)
 
 
diff --git a/tox.ini b/tox.ini
index 35ab862..a4a33a3 100644
--- a/tox.ini
+++ b/tox.ini
@@ -15,19 +15,21 @@ envlist =
     clean,
     check,
     docs,
-    {py27,py36,py37,py38,py39,pypy,pypy3}-{cover,nocov},
+    {py36,py37,py38,py39,py310,pypy37,pypy38}-{cover,nocov},
     report
 ignore_basepython_conflict = true
 
 [testenv]
 basepython =
     pypy: {env:TOXPYTHON:pypy}
-    pypy3: {env:TOXPYTHON:pypy3}
+    pypy37: {env:TOXPYTHON:pypy3.7}
+    pypy38: {env:TOXPYTHON:pypy3.8}
     py27: {env:TOXPYTHON:python2.7}
     py36: {env:TOXPYTHON:python3.6}
     py37: {env:TOXPYTHON:python3.7}
     py38: {env:TOXPYTHON:python3.8}
     py39: {env:TOXPYTHON:python3.9}
+    py310: {env:TOXPYTHON:python3.10}
     {bootstrap,clean,check,report,docs,codecov,coveralls,extension-coveralls}: {env:TOXPYTHON:python3}
 setenv =
     PYTHONPATH={toxinidir}/tests
@@ -44,7 +46,6 @@ wheel =
 deps =
     pytest
     pytest-benchmark
-    pytest-travis-fold
     Django
     objproxies==0.9.4
     hunter