diff --git a/.travis.yml b/.travis.yml
index 2f403a6b..29b146a9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,6 @@
-language: python
+language: c
 os: osx
+osx_image: xcode9.4
 install:
   - pip install -r requirements.txt
   - python setup.py install