diff --git a/.github/workflows/build_commit.yaml b/.github/workflows/build_commit.yaml
index bfa22ad..08e1596 100644
--- a/.github/workflows/build_commit.yaml
+++ b/.github/workflows/build_commit.yaml
@@ -5,6 +5,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
+      - uses: actions/checkout@v2
       - uses: actions/setup-java@v2
         with:
           distribution: temurin