Changed 2 public links from http to https
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 8bed14b..93d8b2f 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -47,9 +47,9 @@
## The Google Test and Google Mock Communities
The Google Test community exists primarily through the
-[discussion group](http://groups.google.com/group/googletestframework) and the
+[discussion group](https://groups.google.com/group/googletestframework) and the
GitHub repository. Likewise, the Google Mock community exists primarily through
-their own [discussion group](http://groups.google.com/group/googlemock). You are
+their own [discussion group](https://groups.google.com/group/googlemock). You are
definitely encouraged to contribute to the discussion and you can also help us
to keep the effectiveness of the group high by following and promoting the
guidelines listed here.
