diff --git a/CHANGELOG.md b/CHANGELOG.md
index b81d1165..4ef24be3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+## [2.13.1] - 2022-10-26
+
 ### Changed
 - Update dependencies (#256)
     - Upgrade direct dependencies in go.mod
@@ -273,7 +275,8 @@ No changes.  Only for updating Docker base image.
 
 See [CHANGELOG-0](./CHANGELOG-0.md).
 
-[Unreleased]: https://github.com/cybozu-go/sabakan/compare/v2.13.0...HEAD
+[Unreleased]: https://github.com/cybozu-go/sabakan/compare/v2.13.1...HEAD
+[2.13.1]: https://github.com/cybozu-go/sabakan/compare/v2.13.0...v2.13.1
 [2.13.0]: https://github.com/cybozu-go/sabakan/compare/v2.12.0...v2.13.0
 [2.12.0]: https://github.com/cybozu-go/sabakan/compare/v2.11.0...v2.12.0
 [2.11.0]: https://github.com/cybozu-go/sabakan/compare/v2.10.0...v2.11.0
diff --git a/version.go b/version.go
index 4de1411c..9f3ec9fc 100644
--- a/version.go
+++ b/version.go
@@ -1,7 +1,7 @@
 package sabakan
 
 // Version is sabakan version
-const Version = "2.13.0"
+const Version = "2.13.1"
 
 // SchemaVersion is the schema version
 const SchemaVersion = "3"