diff --git a/.travis.yml b/.travis.yml
index 03778a7..a78071d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,13 +8,11 @@ matrix:
 
 addons:
   apt:
-    sources:
-      - george-edison55-precise-backports # cmake 3.2.3 / doxygen 1.8.3
     packages:
-      - cmake
-      - cmake-data
       - lcov
       - curl
+      - xorg-dev
+      - libglu1-mesa-dev
 
 compiler:
   - clang