diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 2618927..bf53c20 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -14,7 +14,7 @@ jobs:
     steps:
       # https://github.com/actions/checkout
       - name: checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       # https://github.com/actions/setup-go
       - name: Set up Go
@@ -33,7 +33,7 @@ jobs:
     steps:
       # https://github.com/actions/checkout
       - name: checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       # https://github.com/actions/setup-go
       - name: Set up Go
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 30bfe00..d4766a5 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -11,7 +11,7 @@ jobs:
     steps:
       # https://github.com/actions/checkout
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0