diff --git a/.travis.yml b/.travis.yml
index 4de1fde99..68c65eb8f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -41,6 +41,13 @@ script:
 after_success:
   - coverage report
   - coveralls
+
+  - pip install diff_cover
+  - coverage xml
+  - diff-cover coverage.xml
+  - diff-quality --violation=pep8
+  - diff-quality --violation=pyflakes
+
   - pip install pep8 pyflakes
   - pep8 --statistics --count PIL/*.py
   - pep8  --statistics --count Tests/*.py