diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 0f274f8..dc2043a 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -45,7 +45,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       # Go should be installed before init phase.
       - uses: actions/setup-go@v6
@@ -65,7 +65,7 @@ jobs:
           # queries: security-extended,security-and-quality
 
       # Autobuild is failed, so it is replaced by the following stages.
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: extractions/setup-just@v3
       - run: just build
         name: Autobuild
diff --git a/.github/workflows/helm.yml b/.github/workflows/helm.yml
index 069bcc4..d9976ac 100644
--- a/.github/workflows/helm.yml
+++ b/.github/workflows/helm.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: set up helm
         uses: azure/setup-helm@v4
@@ -28,7 +28,7 @@ jobs:
     if: ${{ startsWith(github.ref, 'refs/tags/v') }}
     steps:
       - name: checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: set up helm
         uses: azure/setup-helm@v4