diff --git a/.github/workflows/notify-new-contribution-agreement.yaml b/.github/workflows/notify-new-contribution-agreement.yaml
index e3fbb96b..f0d751b4 100644
--- a/.github/workflows/notify-new-contribution-agreement.yaml
+++ b/.github/workflows/notify-new-contribution-agreement.yaml
@@ -17,7 +17,7 @@ jobs:
       - name: 🛫 Checkout
         uses: actions/checkout@v4
         with:
-          fetch-depth: 2 # get current and previous commit
+          fetch-depth: 0 # get current and previous commit
 
       - name: Test
         run: echo "test $(git --no-pager diff HEAD~1:CONTRIBUTING.md CONTRIBUTING.md)"