diff --git a/.github/workflows/diff-poetry-lock.yaml b/.github/workflows/diff-poetry-lock.yaml
index a96ca10..7c1dde5 100644
--- a/.github/workflows/diff-poetry-lock.yaml
+++ b/.github/workflows/diff-poetry-lock.yaml
@@ -21,5 +21,7 @@ jobs:
           ref: ${{ github.event.pull_request.head.sha }}
           sparse-checkout: poetry.lock
       - name: Diff poetry.lock
+        env:
+          DEBUG_MODE: 1
         uses: | # zizmor: ignore[unpinned-uses] It's safe to use main on our own repo.
           target/diff-poetry-lock@main