diff --git a/CHANGES.md b/CHANGES.md
index f60403cdaaf..bfa021617cb 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -33,7 +33,7 @@
 - Fix black not honouring `pyproject.toml` settings when running `--stdin-filename` and
   the `pyproject.toml` found isn't in the current working directory (#3719)
 - Black will now error if `exclude` and `extend-exclude` have invalid data types in
-  `pyproject.toml`, instead of silently doing the wrong thing.
+  `pyproject.toml`, instead of silently doing the wrong thing (#3764)
 
 ### Packaging