diff --git a/plugins/python-build/share/python-build/activepython-2.7.14 b/plugins/python-build/share/python-build/activepython-2.7.14
index 1f5f6ea7..70678731 100644
--- a/plugins/python-build/share/python-build/activepython-2.7.14
+++ b/plugins/python-build/share/python-build/activepython-2.7.14
@@ -1,6 +1,8 @@
+# Download source: http://downloads.activestate.com/ActivePython/releases/2.7.14.2717/
+
 case "$(activepython_architecture 2>/dev/null || true)" in
 "linux-x86_64" )
-  install_package "ActivePython-2.7.14.2717-linux-x86_64-glibc-2.12-404899" "http://downloads.activestate.com/ActivePython/releases/2.7.14.2717/ActivePython-2.7.14.2717-linux-x86_64-glibc-2.12-404899.tar.gz" "activepython" verify_py27
+  install_package "ActivePython-2.7.14.2717-linux-x86_64-glibc-2.12-404899" "http://downloads.activestate.com/ActivePython/releases/2.7.14.2717/ActivePython-2.7.14.2717-linux-x86_64-glibc-2.12-404899.tar.gz#0b514b0edb6b847524d44637f56fdebcedb007864c61f8500e68bc2015dad937" "activepython" verify_py27
   ;;
 * )
   { echo
diff --git a/plugins/python-build/share/python-build/activepython-3.5.4 b/plugins/python-build/share/python-build/activepython-3.5.4
index 3e8e9234..9faf14af 100644
--- a/plugins/python-build/share/python-build/activepython-3.5.4
+++ b/plugins/python-build/share/python-build/activepython-3.5.4
@@ -1,6 +1,8 @@
+# Location source: http://downloads.activestate.com/ActivePython/releases/3.5.4.3504/
+
 case "$(activepython_architecture 2>/dev/null || true)" in
 "linux-x86_64" )
-  install_package "ActivePython-3.5.4.3504-linux-x86_64-glibc-2.12-404899" "http://downloads.activestate.com/ActivePython/releases/3.5.4.3504/ActivePython-3.5.4.3504-linux-x86_64-glibc-2.12-404899.tar.gz" "activepython" verify_py35
+  install_package "ActivePython-3.5.4.3504-linux-x86_64-glibc-2.12-404899" "http://downloads.activestate.com/ActivePython/releases/3.5.4.3504/ActivePython-3.5.4.3504-linux-x86_64-glibc-2.12-404899.tar.gz#c65e7384bcff715399ef077aea5a17a9f60c3f5de3532a3767497af1d555f092" "activepython" verify_py35
   ;;
 * )
   { echo
diff --git a/plugins/python-build/share/python-build/activepython-3.6.0 b/plugins/python-build/share/python-build/activepython-3.6.0
index 95d23f7f..e1dadb61 100644
--- a/plugins/python-build/share/python-build/activepython-3.6.0
+++ b/plugins/python-build/share/python-build/activepython-3.6.0
@@ -1,9 +1,11 @@
+# Download source: http://downloads.activestate.com/ActivePython/releases/3.6.0.3600/
+
 case "$(activepython_architecture 2>/dev/null || true)" in
 "linux-x86_64" )
-  install_package "ActivePython-3.6.0.3600-linux-x86_64-glibc-2.3.6-401834" "http://downloads.activestate.com/ActivePython/releases/3.6.0.3600/ActivePython-3.6.0.3600-linux-x86_64-glibc-2.3.6-401834.tar.gz" "activepython" verify_py36
+  install_package "ActivePython-3.6.0.3600-linux-x86_64-glibc-2.3.6-401834" "http://downloads.activestate.com/ActivePython/releases/3.6.0.3600/ActivePython-3.6.0.3600-linux-x86_64-glibc-2.3.6-401834.tar.gz#edd17d3221d9744fe27d37842b325f55d0261e69073de3be54e29c1806fe57ae" "activepython" verify_py36
   ;;
 "linux-x86" )
-  install_package "ActivePython-3.6.0.3600-linux-x86-glibc-2.3.6-401834" "http://downloads.activestate.com/ActivePython/releases/3.6.0.3600/ActivePython-3.6.0.3600-linux-x86-glibc-2.3.6-401834.tar.gz" "activepython" verify_py36
+  install_package "ActivePython-3.6.0.3600-linux-x86-glibc-2.3.6-401834" "http://downloads.activestate.com/ActivePython/releases/3.6.0.3600/ActivePython-3.6.0.3600-linux-x86-glibc-2.3.6-401834.tar.gz#fafa22ad3346532384866ad009da0c9f23323167dff9de5995f94e827a5eba32" "activepython" verify_py36
   ;;
 * )
   { echo