diff --git a/CHANGELOG.md b/CHANGELOG.md
index c2d9876df853248565f1ee21d483881c950572a3..586806bef79ff0e9a74ba5dfd5394d3c5ec65b50 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -38,6 +38,8 @@ With this release, we dropped support for Coq 8.9.
   `auth_auth_valid*`, `auth_frag_valid*`, or `auth_both_valid*` instead.
 * Add the camera of discardable fractions `dfrac`. This is a generalization of
   the normal fractional camera. See `theories/algebra/dfrac.v` for further information.
+* Rename `cmra_monotone_valid` into `cmra_morphism_valid` (this rename was
+  forgotten in !56).
 
 **Changes in `proofmode`:**