diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 8a799459262..252c6bd0e99 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out files from GitHub
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
       - name: Setting up Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v2.1.5
         with:
@@ -31,7 +31,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out files from GitHub
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
       - name: Setting up Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v2.1.5
         with:
@@ -55,7 +55,7 @@ jobs:
     needs: [markdown-lint]
     steps:
       - name: Check out files from GitHub
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
       - name: Setting up Ruby 2.6
         uses: ruby/setup-ruby@v1.70.1
         with: