diff --git a/.travis.yml b/.travis.yml
index 6ac98111b..0ea2c0a33 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -59,7 +59,7 @@ before_install:
     - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then get_python_environment $TERRYFY_PYTHON venv; fi
 install:
   - pip install --upgrade pip
-  - pip uninstall numpy
+  - pip uninstall -y numpy
   - pip install --upgrade -r requirements.txt
   - cython src/*.pyx
   - pip install -e .