diff --git a/CONTRIBUTING.md b/CONTRIBUTING.rst
similarity index 100%
rename from CONTRIBUTING.md
rename to CONTRIBUTING.rst
diff --git a/README b/README
index 842010345..468fbef68 100644
--- a/README
+++ b/README
@@ -106,7 +106,7 @@ modules.
 
 9. Contribute a patch!
   Once you have experimented with stuff, please send your results back.
-  For more details on how to do so, you can see the CONTRIBUTING.md file.
+  For more details on how to do so, you can see the CONTRIBUTING.rst file.
 
 [> License
 ----------