diff --git a/.github/workflows/commitlint.yml b/.github/workflows/commitlint.yml
index 6943901f..35d3292e 100644
--- a/.github/workflows/commitlint.yml
+++ b/.github/workflows/commitlint.yml
@@ -12,7 +12,7 @@ jobs:
   commitlint:
     runs-on: ubuntu-latest
     steps:
-      - uses: 'actions/checkout@v2'
+      - uses: 'actions/checkout@v2.3.4'
         with:
           fetch-depth: 0
       - uses: 'wagoid/commitlint-github-action@v3.1.0'
diff --git a/.github/workflows/nodejs.yml b/.github/workflows/nodejs.yml
index a5692bea..cf78d80f 100644
--- a/.github/workflows/nodejs.yml
+++ b/.github/workflows/nodejs.yml
@@ -17,7 +17,7 @@ jobs:
         node-version: [10.x, 12.x, 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 cc242c38..ff70fe74 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'
 
       - uses: 'actions/setup-node@v2.1.5'
         with: