diff --git a/.travis.yml b/.travis.yml
index bb011f28fc98b12fdee5e2f578e1bc30f691fef2..b4acabc32c1bd2add3401f610a0f5a8e6a544b70 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,6 +13,7 @@ script:
 install:
  - pip install -r requirements.txt
  - pip install -r stress_tests/requirements.txt
+ - pip install yapf
  - pip install --force-reinstall "coverage>=4.0,<4.4" codeclimate-test-reporter
 after_success:
  - codeclimate-test-reporter