diff --git a/.travis.yml b/.travis.yml
index 00a159f..c3c5d02 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,6 +11,7 @@ matrix:
 install:
   - pip install coveralls
   - pip install codecov
+  - pip install pyyaml
   - pip install vcrpy
   - pip install -r requirements.txt
   - python setup.py install