diff --git a/.travis.yml b/.travis.yml
index 02bc2dd..a32aa8e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,18 +3,20 @@ language: python
 python:
  - 2.7
 
+addons:
+  apt:
+    sources:
+      - deadsnakes
+    packages:
+      - python2.4
+      - python2.5
+      - python2.6
+      - python3.1
+      - pypy
+
 env:
  - TOXENV=py24
 
-before_install:
- - if [[ $(echo "$TOXENV" | egrep -c "(py2[45]|py3[14])") != 0 ]]; then sudo add-apt-repository -y ppa:fkrull/deadsnakes; fi;
- - if [[ $(echo "$TOXENV" | egrep -c "(py2[45]|py3[14])") != 0 ]]; then sudo apt-get update -qq; fi;
- - if [[ "$TOXENV" == "py24" ]]; then sudo apt-get install -y python2.4; fi;
- - if [[ "$TOXENV" == "py25" ]]; then sudo apt-get install -y python2.5; fi;
- - if [[ "$TOXENV" == "py31" ]]; then sudo apt-get install -y python3.1; fi;
- - if [[ "$TOXENV" == "py34" ]]; then sudo apt-get install -y python3.4; fi;
- - if [[ "$TOXENV" == "pypy" ]]; then sudo apt-get install -y pypy; fi;
-
 install:
  - if [[ $(echo "$TOXENV" | egrep -c "(py2[45]|py31)") != 0 ]]; then pip install virtualenv==1.7.2 tox==1.3; fi;
  - if [[ $(echo "$TOXENV" | egrep -c "(py2[45]|py31)") == 0 ]]; then pip install tox; fi;