diff --git a/.travis.yml b/.travis.yml
index 7a40a2ae..fb0cb59c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,9 @@
 language: python
 install:
-- pip install -r requirements.txt
+  - pip install -r requirements.txt
 script:
-- mkdocs build --verbose --clean
+  - mkdocs build --verbose --clean
+cache: pip
 deploy:
  provider: pages
  keep-history: true