diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5fbe3b977dba0814757e20366172e750d52827da..5c1ccfd72a026fd855d713743e7ceb7c9f5a8549 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -59,6 +59,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * Fixed an issue where `caosadvancedtools.cache.UpdateCache` would
   cause an `sqlite3.IntegrityError` if more than one change was cached
   for the same entity.
+* #40 Insertion of identifiables with missing obligatory properties
 
 ### Security ###