diff --git a/.travis.yml b/.travis.yml
index bb313bb..54aae95 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,7 @@ addons:
     packages:
       - expect-dev  # provides unbuffer utility
       - python-lxml # because pip installation is slow
+      - libcups2-dev # for aeroo
 
 language: python