diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index af352da..3d02535 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup Go
         uses: actions/setup-go@v6
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index da9193d..a54914b 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -28,7 +28,7 @@ jobs:
       GCP_SERVICE_ACCOUNT: ${{ vars.GCP_SERVICE_ACCOUNT }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Validate deploy configuration
         run: |
diff --git a/.github/workflows/smoke.yml b/.github/workflows/smoke.yml
index f0e4d13..0773b3b 100644
--- a/.github/workflows/smoke.yml
+++ b/.github/workflows/smoke.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Run smoke tests
         env: