diff --git a/.travis.yml b/.travis.yml
index 9327c12..380d44b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -47,6 +47,8 @@ before_script:
   - greenkeeper-lockfile-update
 after_script:
   - greenkeeper-lockfile-upload
+install:
+  - npm install
 script: travis_retry npm run $COMMAND
 env:
   global: