diff --git a/.travis.yml b/.travis.yml
index eea9de24..aab43d5d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,7 @@ python:
 virtualenv:
   system_site_packages: true
 before_install:
-  - sudo apt-get install -qq python-numpy python-scipy
+  - sudo apt-get install -qq python-numpy python-scipy python-matplotlib
 # command to install dependencies
 install: "pip install -r requirements.txt --use-mirrors"
 # command to run tests
diff --git a/requirements.txt b/requirements.txt
index 27ba63e9..6b7df820 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
 numpy
 scipy
 ipython
+matplotlib