diff --git a/README.rst b/README.rst
index ab8bd6cb..b3234dc9 100644
--- a/README.rst
+++ b/README.rst
@@ -24,7 +24,7 @@ Testing, Development, and Contributing
 --------------------------------------
 
 Go to the
-`CONTRIBUTING <https://github.com/globus/globus-sdk-python/blob/main/CONTRIBUTING.adoc>`_
+`CONTRIBUTING <https://github.com/globus/globus-sdk-python/blob/main/CONTRIBUTING.rst>`_
 guide for detail.
 
 Links