diff --git a/.travis.yml b/.travis.yml
index e61046d..d98771c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,7 +3,7 @@ addons:
     packages:
       - libhdf5-serial-dev
       - python-pip
-  apt: true
+cache:
   directories: $HOME/.cache/pip
 dist: trusty
 after_script: make clean