diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 225118e..4bed16b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,7 +16,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Run tests
         run: ./run-specs-in-docker.sh
@@ -26,7 +26,7 @@ jobs:
     timeout-minutes: 10
     container: 84codes/crystal:latest-ubuntu-24.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - run: shards install
       - run: bin/ameba
 
@@ -35,7 +35,7 @@ jobs:
     timeout-minutes: 10
     container: 84codes/crystal:latest-ubuntu-24.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - run: crystal tool format --check
 
   integration:
@@ -43,6 +43,6 @@ jobs:
     timeout-minutes: 10
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: PHP client integration test using Docker Compose
         run: ./test/integration-php.sh
diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 1c057f9..9d67ea3 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -32,7 +32,7 @@ jobs:
       id-token: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: ${{ github.event.inputs.tag || github.ref }}
 
diff --git a/.github/workflows/packages.yml b/.github/workflows/packages.yml
index e1c9c95..6f31786 100644
--- a/.github/workflows/packages.yml
+++ b/.github/workflows/packages.yml
@@ -16,7 +16,7 @@ jobs:
       id-token: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install Depot CLI
         uses: depot/setup-action@v1
@@ -53,7 +53,7 @@ jobs:
       fail-fast: false
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
@@ -107,7 +107,7 @@ jobs:
       id-token: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index c2e62fe..e0c309f 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0