diff --git a/.github/release-please/.release-please-manifest.json b/.github/release-please/.release-please-manifest.json
index 114814d6f..27a50f8ee 100644
--- a/.github/release-please/.release-please-manifest.json
+++ b/.github/release-please/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "3.4.20"
+  ".": "3.4.21"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7af713a81..b95d60ea7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [3.4.21](https://github.com/4m-mazi/gh-test/compare/v3.4.20...v3.4.21) (2024-05-12)
+
+
+### Miscellaneous Chores
+
+* test の更新 ([#723](https://github.com/4m-mazi/gh-test/issues/723)) ([e660e5a](https://github.com/4m-mazi/gh-test/commit/e660e5a3958a19ca369b1f26279b760b70c2551a))
+
 ## [3.4.20](https://github.com/4m-mazi/gh-test/compare/v3.4.19...v3.4.20) (2024-05-11)
 
 
diff --git a/Cargo.lock b/Cargo.lock
index aeb8eab19..26e3a20d4 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4,4 +4,4 @@ version = 3
 
 [[package]]
 name = "rust-ci-test"
-version = "3.4.20"
+version = "3.4.21"
diff --git a/Cargo.toml b/Cargo.toml
index ba0cdd386..89c9aa3cc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "rust-ci-test"
-version = "3.4.20"
+version = "3.4.21"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
diff --git a/README.md b/README.md
index 9924aff8f..bb18bdca0 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 <!-- x-release-please-start-version -->
 
-version: 3.4.20 foo
-https://example.com/3.4.20/bar
+version: 3.4.21 foo
+https://example.com/3.4.21/bar
 
 <!-- x-release-please-end -->