diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 628395c..f626c4c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,7 +19,7 @@ jobs:
           - 12
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v2.3.4
 
       - name: Setup Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v2.1.5
@@ -56,7 +56,7 @@ jobs:
           - 12
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v2.3.4
 
       - name: Set up Node.js
         uses: actions/setup-node@v2.1.5
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 15bc6b0..cd8d8f6 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v2.3.4
 
       - name: Set up Node.js
         uses: actions/setup-node@v2.1.5