diff --git a/CHANGES.rst b/CHANGES.rst
index 62053c9..d6fb266 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -6,6 +6,7 @@ Changelog
 
 Minor changes:
 
+- Update build configuration to build readthedocs. #538
 - No longer run the ``plone.app.event`` tests.
 
 Breaking changes: