diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 6e5c332..e132505 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -10,7 +10,7 @@ jobs:
   publish:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: haya14busa/action-update-semver@v1
       with:
         major_version_tag_only: true
diff --git a/.github/workflows/test_action.yaml b/.github/workflows/test_action.yaml
index ba4465b..ee50409 100644
--- a/.github/workflows/test_action.yaml
+++ b/.github/workflows/test_action.yaml
@@ -8,7 +8,7 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - run: mkdir -p myoutput
       - name: Test KICS action
         uses: ./