diff --git a/.travis.yml b/.travis.yml
index d5502f0613..b7de403b7d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -29,8 +29,9 @@ install:
   - conda info -a
   - conda create -q -n test-environment python=$TRAVIS_PYTHON_VERSION flake8 scipy=1.0.0 numpy freetype nose pandas=0.22.0 jupyter ipython=5.4.1 param matplotlib=2.1.2 xarray networkx
   - source activate test-environment
-  - conda install -c conda-forge filelock iris plotly=2.7 flexx ffmpeg netcdf4=1.3.1 --quiet
+  - conda install -c conda-forge filelock iris plotly=2.7 ffmpeg netcdf4=1.3.1 --quiet
   - conda install -c bokeh datashader dask bokeh=0.12.15 selenium
+  - pip install flexx
   - if [[ "$TRAVIS_PYTHON_VERSION" == "3.4" ]]; then
       conda install python=3.4.3;
     fi