diff --git a/docs/release-notes.md b/docs/release-notes.md
index f7596971..16755739 100644
--- a/docs/release-notes.md
+++ b/docs/release-notes.md
@@ -21,6 +21,8 @@ key](https://getfedora.org/security/).
   openshift 4.14.0-exp)_
 - Require `storage.filesystems.path` to start with `/etc` or `/var` if
   `with_mount_unit` is true _(fcos 1.6.0-exp, openshift 4.14.0-exp)_
+- Require local/inline fields from Ignition.Config.Merge to have the .ign file 
+  extension _(fcos 1.6.0-exp)_
 
 ### Bug fixes