diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index b198edde85..ecdfe7d722 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -5,7 +5,7 @@ jobs:
     name: run benchmark
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v1
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: stable