diff --git a/recipes-core/classpathx/gnujaf_1.1.1.bb b/recipes-core/classpathx/gnujaf_1.1.1.bb
index 0bd8b573..767e6923 100644
--- a/recipes-core/classpathx/gnujaf_1.1.1.bb
+++ b/recipes-core/classpathx/gnujaf_1.1.1.bb
@@ -5,7 +5,7 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=a916467b91076e631dd8edb7424769c7"
 
 PR = "r1"
 
-SRC_URI = "http://ftp.gnu.org/gnu/classpathx/activation-${PV}.tar.gz \
+SRC_URI = "https://ftp.gnu.org/gnu/classpathx/activation-${PV}.tar.gz \
            file://datadir_java.patch \
            file://MimeType-symbols-fix.patch \
           "
diff --git a/recipes-core/classpathx/gnumail_1.1.2.bb b/recipes-core/classpathx/gnumail_1.1.2.bb
index 22d0405f..41aae553 100644
--- a/recipes-core/classpathx/gnumail_1.1.2.bb
+++ b/recipes-core/classpathx/gnumail_1.1.2.bb
@@ -4,7 +4,7 @@ LICENSE = "GPL-2.0-with-GCC-exception"
 PR = "r1"
 LIC_FILES_CHKSUM = "file://COPYING;md5=14bc6ee8b2e2b409be599212867d126e"
 
-SRC_URI = "http://ftp.gnu.org/gnu/classpathx/mail-${PV}.tar.gz \
+SRC_URI = "https://ftp.gnu.org/gnu/classpathx/mail-${PV}.tar.gz \
            file://datadir_java.patch \
            file://fix_makefile_race_condition.patch \
           "
diff --git a/recipes-core/classpathx/inetlib_1.1.1.bb b/recipes-core/classpathx/inetlib_1.1.1.bb
index 9146c9ec..c1299cea 100644
--- a/recipes-core/classpathx/inetlib_1.1.1.bb
+++ b/recipes-core/classpathx/inetlib_1.1.1.bb
@@ -9,7 +9,7 @@ HOMEPAGE = "http://gnu.org/software/classpath/inetlib.html"
 LICENSE = "GPL-2.0-with-GCC-exception"
 LIC_FILES_CHKSUM = "file://COPYING;md5=0636e73ff0215e8d672dc4c32c317bb3"
 
-SRC_URI = "http://ftp.gnu.org/gnu/classpath/${BP}.tar.gz \
+SRC_URI = "https://ftp.gnu.org/gnu/classpath/${BP}.tar.gz \
            file://datadir_java.patch \
            file://inetlib-missing-dependency-for-util_classes.patch \
           "