diff --git a/CHANGELOG.md b/CHANGELOG.md
index e1ec00b..2049839 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,14 @@
 
 <!-- version list -->
 
+## v5.21.0 (2025-10-03)
+
+### Chores
+
+- Sync version to config.py [skip ci]
+  ([`ddb20a6`](https://github.com/BeehiveInnovations/zen-mcp-server/commit/ddb20a6cdb8cdeee27c0aacb0b9c794283b5774c))
+
+
 ## v5.20.1 (2025-10-03)
 
 ### Chores
diff --git a/pyproject.toml b/pyproject.toml
index bb9a6fc..74cf609 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "zen-mcp-server"
-version = "5.20.1"
+version = "5.21.0"
 description = "AI-powered MCP server with multiple model providers"
 requires-python = ">=3.9"
 dependencies = [