diff --git a/.travis.yml b/.travis.yml
index 47f8588..5fcd0e6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,6 +9,9 @@ python:
 install:
 - pip install -r requirements.txt
 script:
+- if [[ $TRAVIS_PYTHON_VERSION == 2.7 ]]; then export CIBW_BUILD=cp27; fi
+- if [[ $TRAVIS_PYTHON_VERSION == 3.5 ]]; then export CIBW_BUILD=cp35; fi
+- if [[ $TRAVIS_PYTHON_VERSION == 3.6 ]]; then export CIBW_BUILD=cp36; fi
 - pip install cibuildwheel==0.10.1
 - cibuildwheel --output-dir wheelhouse