diff --git a/.travis.yml b/.travis.yml
index 9c57b80..cf7730b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,9 @@
 language: python
 python: 2.7
 
+cache:
+  - pip
+
 install:
   - if [ "$HG_VERSION" != "dev" ];
     then pip install Mercurial${HG_VERSION+==$HG_VERSION};