diff --git a/docs/changelog.md b/docs/changelog.md
index 633b032..365d9f6 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -9,6 +9,7 @@
 - In any `OrdAttMap, for membership (`__contains__`) consider items added via attribute syntax.
 - Prevent duplicate key/attr iteration in any `OrdAttMap`.
 - Allow item and attribute syntax to equivalently mutate a map; see [Issue 50](https://github.com/pepkit/attmap/issues/50)
+- Type conversion and merger of inserted mappings
 
 ## [0.12] - 2019-05-16
 ### Added