diff --git a/.github/workflows/commitlint.yml b/.github/workflows/commitlint.yml
index 0775bd9..170f807 100644
--- a/.github/workflows/commitlint.yml
+++ b/.github/workflows/commitlint.yml
@@ -14,7 +14,7 @@ jobs:
     if: ${{ (github.event_name == 'push') || (github.event_name == 'pull_request_review' && github.event.review.state == 'approved' && (github.event.review.author_association == 'COLLABORATOR' || github.event.review.author_association == 'MEMBER' || github.event.review.author_association == 'OWNER') && !github.event.pull_request.draft && github.event.pull_request.state == 'open') }}
     runs-on: 'ubuntu-latest'
     steps:
-      - uses: 'actions/checkout@v2'
+      - uses: 'actions/checkout@v2.3.4'
         with:
           fetch-depth: 0
       - uses: 'wagoid/commitlint-github-action@v3.1.3'
diff --git a/.github/workflows/nodejs.yml b/.github/workflows/nodejs.yml
index 1158149..693628c 100644
--- a/.github/workflows/nodejs.yml
+++ b/.github/workflows/nodejs.yml
@@ -17,7 +17,7 @@ jobs:
       matrix:
         node-version: [14.x]
     steps:
-      - uses: 'actions/checkout@v2'
+      - uses: 'actions/checkout@v2.3.4'
 
       - name: Use Node.js ${{ matrix.node-version }}
         uses: 'actions/setup-node@v2.1.5'
diff --git a/.github/workflows/npm-publish.yml b/.github/workflows/npm-publish.yml
index 9c3eaf0..32617ed 100644
--- a/.github/workflows/npm-publish.yml
+++ b/.github/workflows/npm-publish.yml
@@ -10,7 +10,7 @@ jobs:
   publish-npm:
     runs-on: 'ubuntu-latest'
     steps:
-      - uses: 'actions/checkout@v2'
+      - uses: 'actions/checkout@v2.3.4'
 
       - name: Use Node.js ${{ matrix.node-version }}
         uses: 'actions/setup-node@v2.1.5'