diff --git a/.travis.yml b/.travis.yml
index 14d6137e929e906607903e37940c7e25d817cd5b..0f1c439e4dadd798667a22d1e4ab497198ad4665 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,7 @@ before_script:
   - chmod +x ./cc-test-reporter
   - ./cc-test-reporter before-build
   - pip install -r requirements.txt
-  - pip install nose2 mock coverage nose2[coverage_plugin]
+  - pip install nose2 mock coverage nose2[coverage_plugin] cython[coverage]
 jobs:
   include:
     - stage: test