diff --git a/.travis.yml b/.travis.yml
index 2b75dc0c2701dc419d619c18778241819605b4cf..6bfe50242d98e26c4a669e3e1b7cb64ccd098186 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,4 +7,5 @@ script:
  - cd example
  - python setup.py test
 install:
+ - pip install Cython
  - python setup.py install