diff --git a/.travis.yml b/.travis.yml
index e74e1eaf45ac4f6d452a0e5b99bd8e77b5b0605d..703815c8d0efb9ce08d5ab3fa4f1641459f833ed 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,6 +16,7 @@ cache:
   - pip
   - directories:
       - $HOME/.pre-commit
+      - $HOME/.vagrant.d/boxes
 
 install:
   - sudo apt-get update