diff --git a/README.rst b/README.rst
index eddbd27d..903af799 100644
--- a/README.rst
+++ b/README.rst
@@ -3,7 +3,7 @@ PySynphot
 
 |docs|
 
-.. |docs| image:: https://readthedocs.io/projects/pysynphot/badge/?version=latest
+.. |docs| image:: https://readthedocs.org/projects/pysynphot/badge/?version=latest
     :alt: Documentation Status
     :scale: 100%
     :target: https://pysynphot.readthedocs.io/en/latest/?badge=latest