package/ci: install matplotlib.

diff --git a/package/ci/travis.yml b/package/ci/travis.yml
index 7690588783cc59ef5d474f2baf1e34e8b7694151..d41b662b9a1d829c4edebaa7d3b74ea865d82a5b 100644 (file)
--- a/package/ci/travis.yml
+++ b/package/ci/travis.yml
@@ -34,7 +34,7 @@ matrix:
 install:
   # Jinja 2.10 has some weird behavior, putting a lot of empty lines into the
   # output
-  - if [ "$WITH_THEME" == "ON" ]; then pip install jinja2==2.9.6 pelican Pyphen Pillow coverage codecov; fi
+  - if [ "$WITH_THEME" == "ON" ]; then pip install jinja2==2.9.6 pelican Pyphen Pillow coverage codecov matplotlib; fi
   - if [ "$WITH_NODE" == "ON" ]; then npm install istanbul codecov; fi
 
   # Needed for doxygen binaries