diff --git a/.github/workflows/aikidosec-safe-chain.yml b/.github/workflows/aikidosec-safe-chain.yml
index fb63d1e..1f6e432 100644
--- a/.github/workflows/aikidosec-safe-chain.yml
+++ b/.github/workflows/aikidosec-safe-chain.yml
@@ -17,7 +17,7 @@ jobs:
     steps:
       # リポジトリをチェックアウト
       - name: Checkout repository
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
       # Node.jsをセットアップ
       - name: Setup Node.js
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bd32a2e..67c67c5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,7 +20,7 @@ jobs:
     steps:
       # リポジトリをチェックアウト
       - name: Checkout repository
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
       # Node.jsをセットアップ
       - name: Setup Node.js
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 929307f..9438e38 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -15,7 +15,7 @@ jobs:
     steps:
       # リポジトリをチェックアウト
       - name: Checkout repository
-        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
 
       # Node.jsをセットアップ
       - name: Setup Node.js