Use the https://cryptography.io domain name
diff --git a/CONTRIBUTING.rst b/CONTRIBUTING.rst
index 9575e84..9f63250 100644
--- a/CONTRIBUTING.rst
+++ b/CONTRIBUTING.rst
@@ -12,4 +12,4 @@
 Extensive contribution guidelines are available in the repository at
 ``docs/contributing.rst``, or online at:
 
-https://cryptography.readthedocs.org/en/latest/contributing/
+https://cryptography.io/en/latest/contributing/