diff --git a/.travis.yml b/.travis.yml
index a9bf045..0ff3297 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,7 +11,7 @@ install:
   - pip install .
 script:
   - flake8 .
-  - yamllint $(git ls-files '*.yml')
+  - yamllint $(git ls-files '*.yaml' '*.yml')
   - coverage run --source=yamllint setup.py test
 after_success:
   coveralls