diff --git a/.travis.yml b/.travis.yml
index 9e6a506..a3627fd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,9 @@
 sudo: false
 language: python
+cache:
+  directories:
+    - .tox
+    - tests/testdata
 python:
   - "2.7"
   - "3.5"