diff --git a/.travis.yml b/.travis.yml
index 9739951f3..aa1237649 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,9 @@
 # https://docs.travis-ci.com/user/languages/python/
 language: python
 
+# https://docs.travis-ci.com/user/caching/#pip-cache
+cache: pip
+
 addons:
   apt:
     update: false