diff --git a/.travis.yml b/.travis.yml
index 191a60e0..db73c829 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -25,6 +25,7 @@ before_install:
     - export SPACER="\n\n\n\n\n\n\n\n\n\n*************************\n\n"
     - sh -e /etc/init.d/xvfb start
     - sudo apt-get update
+    - sudo apt-get build-dep python-matplotlib
 
     # Python 3.2 is not supported by Miniconda, so we use the package manager for that run.
     # NumPy has a bug in python 3 that is only fixed in the latest version,