diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5b6f41f0..24aea4b8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: macOS-latest
     steps:
       - name: git checkout
-        uses: actions/checkout@v2.3.4
+        uses: actions/checkout@v2.3.5
 
       - name: versions
         run: |