diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e658deaf..9df53468 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -11,7 +11,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v2.3.4
       - name: Setup Node.js
         uses: actions/setup-node@v2.1.5
       - name: Get yarn cache directory path