diff --git a/.github/workflows/dockerimage.yml b/.github/workflows/dockerimage.yml
index 84d7b00..dea957c 100644
--- a/.github/workflows/dockerimage.yml
+++ b/.github/workflows/dockerimage.yml
@@ -9,6 +9,6 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: Build the Docker image
       run: docker build . --file Dockerfile --tag reviewdog-stylelint:$(date +%s)
diff --git a/.github/workflows/reviewdog.yml b/.github/workflows/reviewdog.yml
index e1f6de3..62134a3 100644
--- a/.github/workflows/reviewdog.yml
+++ b/.github/workflows/reviewdog.yml
@@ -5,7 +5,7 @@ jobs:
     name: runner / stylelint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - name: stylelint-github-pr-check
         uses: ./
         with:
diff --git a/.github/workflows/update_semver.yml b/.github/workflows/update_semver.yml
index f07e1e5..8e832ec 100644
--- a/.github/workflows/update_semver.yml
+++ b/.github/workflows/update_semver.yml
@@ -9,7 +9,7 @@ jobs:
   update-semver:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - uses: haya14busa/action-update-semver@v1
         with:
           github_token: ${{ secrets.github_token }}