diff --git a/.travis.yml b/.travis.yml
index 3defd662..6bc9a511 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -19,9 +19,12 @@ before_install:
 addons:
   apt:
     packages:
-      - python3-matplotlib
       - xvfb
 
+env:
+  - PYTHON = ""
+  - MPLBACKEND = "agg"
+
 notifications:
   email: true