diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c07380f..a341e99 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: composer test
         uses: docker://chubbyphp/ci-php81:latest
         env:
@@ -22,7 +22,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: composer test
         uses: docker://chubbyphp/ci-php82:latest
         env:
@@ -33,7 +33,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: composer test
         uses: docker://chubbyphp/ci-php83:latest
         env: