diff --git a/.travis.yml b/.travis.yml
index 324773850..30055e12c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -25,6 +25,8 @@ before_install:
   - sudo apt-get update -qq
   - sudo apt-get install -y -qq yarn
   - yarn global add coveralls
+  # remove unused node modules from cache
+  - npm prune
 
 install: yarn
 
@@ -32,8 +34,6 @@ before_script:
   # use firefox
   - export DISPLAY=:99.0
   - sh -e /etc/init.d/xvfb start
-  # remove unused node modules from cache
-  - npm prune
 
 script: yarn test