diff --git a/.travis.yml b/.travis.yml
index 33dfa24ac..cec6b84c8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -59,7 +59,7 @@ before_install:
   - env
   - rvm install ruby --latest
   - gem install dropbox-deployment
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew update; brew bundle; alias python='python3'; fi
+  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew update; brew bundle; shopt -s expand_aliases; alias python='python3'; fi
   - eval "${MATRIX_EVAL}"
   - python -c "import distutils.sysconfig as sysconfig; print(sysconfig.__file__)"