diff --git a/.travis.yml b/.travis.yml
index 9ffac7d..4b3e803 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -100,7 +100,8 @@ before_install:
   - pip install codecov
   - pip install pymongo
 install:
-  - if [ "$TRAVIS_PYTHON_VERSION" == "2.7" ]; then pip install coverage pytest-cov .; else pip install ".[test]"; fi
+  - echo $TRAVIS_OS_NAME
+  - if [ "$TRAVIS_PYTHON_VERSION" == "2.7" ] && ["$TRAVIS_OS_NAME" == "linux"]; then pip install coverage pytest-cov .; else pip install ".[test]"; fi
 script: python -m pytest
 # submit coverage
 after_success: