diff --git a/.travis.yml b/.travis.yml
index 99d02aee..f1cb2962 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,13 @@
-sudo: required
 language: python
 python:
   - "2.7"
 
+addons:
+  apt:
+    packages:
+      - expect-dev  # provides unbuffer utility
+      - python-lxml  # because pip installation is slow
+
 virtualenv:
   system_site_packages: true