diff --git a/CHANGELOG.md b/CHANGELOG.md
index d2f30a84..c9629aea 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.3.13](https://github.com/a2aproject/a2a-python/compare/v0.3.12...v0.3.13) (2025-11-13)
+
+
+### Bug Fixes
+
+* return entire history when history_length=0 ([#537](https://github.com/a2aproject/a2a-python/issues/537)) ([acdc0de](https://github.com/a2aproject/a2a-python/commit/acdc0de4fa03d34a6b287ab252ff51b19c3016b5))
+
 ## [0.3.12](https://github.com/a2aproject/a2a-python/compare/v0.3.11...v0.3.12) (2025-11-12)