diff --git a/README.md b/README.md
index 42d74ca6c..391914d1a 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@master
+      uses: actions/checkout@v1
 
     - name: Install
       run: |