diff --git a/CHANGELOG_UNRELEASED.md b/CHANGELOG_UNRELEASED.md
index 12c871ea4..3e1106834 100644
--- a/CHANGELOG_UNRELEASED.md
+++ b/CHANGELOG_UNRELEASED.md
@@ -27,6 +27,7 @@
 ### Removed
 
 - Drop support for MathComp 1.11
+- Typeclasses Opaque fmap.
 
 ### Infrastructure