diff --git a/CHANGELOG.md b/CHANGELOG.md
index 467ef1e..324a4d9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [2.1.3] - 2025-03-07
+
+(No changes documented; release for version sync.)
+
 ## [2.1.2] - 2025-03-06
 
 (No changes documented; release for version sync.)
@@ -68,7 +72,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Input validation and initData hash verification for Miniapp access.
 - Optional CORS and init_data_max_age; use env for secrets.
 
-[Unreleased]: https://github.com/your-org/duty-teller/compare/v2.1.2...HEAD
+[Unreleased]: https://github.com/your-org/duty-teller/compare/v2.1.3...HEAD
+[2.1.3]: https://github.com/your-org/duty-teller/releases/tag/v2.1.3
 [2.1.2]: https://github.com/your-org/duty-teller/releases/tag/v2.1.2
 [2.1.1]: https://github.com/your-org/duty-teller/releases/tag/v2.1.1  <!-- placeholder: set to your repo URL when publishing -->
 [2.0.6]: https://github.com/your-org/duty-teller/releases/tag/v2.0.6  <!-- placeholder: set to your repo URL when publishing -->
diff --git a/pyproject.toml b/pyproject.toml
index 710da2e..8cb29ec 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "duty-teller"
-version = "2.1.2"
+version = "2.1.3"
 description = "Telegram bot for team duty shift calendar and group reminder"
 readme = "README.md"
 requires-python = ">=3.11"