diff --git a/.github/workflows/lint_python.yml b/.github/workflows/lint_python.yml
index cd80a8b..9afc1fb 100644
--- a/.github/workflows/lint_python.yml
+++ b/.github/workflows/lint_python.yml
@@ -13,5 +13,5 @@ jobs:
       # Install and run linters.
       - run: pip install black codespell flake8
       - run: codespell --quiet-level=2
-      - run: black . --check --line-length $MAX_LINE_LENGTH
+      - run: black . --check --diff --line-length $MAX_LINE_LENGTH
       - run: flake8 . --count --show-source --statistics --max-line-length=$MAX_LINE_LENGTH