diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index f103c47c5a..1470d44ed4 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1,12 +1,12 @@
 # Contributing to the Pacemaker project
 
 If you find Pacemaker useful and wish to support the project, you can:
 
 * Spread the word (on blogs, social media, mailing lists, Q&A websites, etc.).
-* Join and participate in the [mailing lists](http://clusterlabs.org/mailman/listinfo/).
-* Report [bugs and new feature requests](http://bugs.clusterlabs.org/).
+* Join and participate in the [mailing lists](https://clusterlabs.org/mailman/listinfo/).
+* Report [bugs and new feature requests](https://bugs.clusterlabs.org/).
 * Contribute documentation, bug fixes, or features to the code base.
 
 If you would like to contribute code base changes, please read
-[Pacemaker Development](http://clusterlabs.org/doc/en-US/Pacemaker/1.1-pcs/html-single/Pacemaker_Development/index.html)
+[Pacemaker Development](https://clusterlabs.org/pacemaker/doc/en-US/Pacemaker/2.0/html-single/Pacemaker_Development/index.html)
 for detailed information about pull requests and policies.