diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index f4c7e10..38b6ed2 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -7,5 +7,7 @@ jobs:
     name: Verify commit messages
     steps:
       - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
       - name: Run commitsar
         uses: docker://aevea/commitsar@sha256:b77adebc0437d4f2bfdf9205a39003e88acbc77a9176fd086b386207a5f3f5cb