diff --git a/services/opensearch/CHANGELOG.md b/services/opensearch/CHANGELOG.md
index 866128ea..031b7e96 100644
--- a/services/opensearch/CHANGELOG.md
+++ b/services/opensearch/CHANGELOG.md
@@ -1,3 +1,7 @@
+## v0.19.1 (2024-12-16)
+
+- **Bugfix:** Correctly handle nullable attributes in model types
+
 ## v0.19.0 (2024-10-14)
 
 - **Feature:** Add support for nullable models