diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index cb8c534..fa7286e 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -24,4 +24,4 @@ jobs:
           python -m pip install -e '.[d]'
 
       - name: Lint
-        run: pre-commit run --all-files
+        run: pre-commit run --all-files --show-diff-on-failure
diff --git a/.travis.yml b/.travis.yml
index b2b127c..86cf24d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -20,7 +20,7 @@ matrix:
     - name: "lint"
       python: 3.7
       env:
-        - TEST_CMD="pre-commit run --all-files"
+        - TEST_CMD="pre-commit run --all-files --show-diff-on-failure"
     - name: "3.6"
       python: 3.6
     - name: "3.7"