diff --git a/.travis.yml b/.travis.yml
index 0705506f..39a3925b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -26,6 +26,7 @@ install:
   - pip install nose-cov python-coveralls
   # - pip install -r requirements.txt
   - python setup.py install
+  - python setup.py build_ext --inplace
 
 # Run test
 script: