diff --git a/CHANGELOG.md b/CHANGELOG.md
index 560be2f..8cdec39 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Changelog
 
+## [v4.3.1](https://github.com/masutaka/github-nippou/compare/v4.3.0...v4.3.1) - 2026-05-03
+### Maintenance :technologist:
+- build(deps): bump Songmu/tagpr from 1.17.1 to 1.18.3 by @dependabot[bot] in https://github.com/masutaka/github-nippou/pull/331
+- build(deps): bump goreleaser/goreleaser-action from 7.0.0 to 7.1.0 by @dependabot[bot] in https://github.com/masutaka/github-nippou/pull/332
+
 ## [v4.3.0](https://github.com/masutaka/github-nippou/compare/v4.2.46...v4.3.0) - 2026-04-29
 ### New Features :tada:
 - Support DiscussionEvent by @masutaka in https://github.com/masutaka/github-nippou/pull/326
diff --git a/lib/version.go b/lib/version.go
index ac41c6b..a36a692 100644
--- a/lib/version.go
+++ b/lib/version.go
@@ -1,4 +1,4 @@
 package lib
 
 // Version is the github-nippou version
-const Version = "4.3.0"
+const Version = "4.3.1"