diff --git a/.github/workflows/build-debug.yml b/.github/workflows/build-debug.yml
index f6e4ba7..e9725b6 100644
--- a/.github/workflows/build-debug.yml
+++ b/.github/workflows/build-debug.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: Cysharp/Actions/.github/actions/setup-dotnet@main
       - run: dotnet build -c Debug
       - run: dotnet test -c Debug
@@ -37,8 +37,8 @@ jobs:
           UNITY_PASSWORD: "op://GitHubActionsPublic/UNITY_LICENSE/credential"
           UNITY_SERIAL: "op://GitHubActionsPublic/UNITY_LICENSE/serial"
 
-      - uses: actions/checkout@v3
-      # Execute scripts: RuntimeUnitTestToolkit
+      - uses: actions/checkout@v4
+
       # /opt/Unity/Editor/Unity -quit -batchmode -nographics -silent-crashes -logFile -projectPath . -executeMethod UnitTestBuilder.BuildUnitTest /headless /ScriptBackend mono /BuildTarget StandaloneLinux64
       - name: Build UnitTest(Linux64, mono)
         uses: Cysharp/Actions/.github/actions/unity-builder@main
diff --git a/.github/workflows/build-docs.yml b/.github/workflows/build-docs.yml
index 68b685d..be5c4b9 100644
--- a/.github/workflows/build-docs.yml
+++ b/.github/workflows/build-docs.yml
@@ -11,8 +11,8 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4
         with:
           repository: Cysharp/DocfxTemplate
           path: docs/_DocfxTemplate
diff --git a/.github/workflows/build-release.yml b/.github/workflows/build-release.yml
index 0befd82..38936fd 100644
--- a/.github/workflows/build-release.yml
+++ b/.github/workflows/build-release.yml
@@ -26,7 +26,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - run: echo ${{ needs.update-packagejson.outputs.sha }}
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           ref: ${{ needs.update-packagejson.outputs.sha }}
       - uses: Cysharp/Actions/.github/actions/setup-dotnet@main
@@ -61,7 +61,7 @@ jobs:
           UNITY_SERIAL: "op://GitHubActionsPublic/UNITY_LICENSE/serial"
 
       - run: echo ${{ needs.update-packagejson.outputs.sha }}
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           ref: ${{ needs.update-packagejson.outputs.sha }}
       # Execute scripts: Export Package