diff --git a/.travis.yml b/.travis.yml
index 1d89e0b..dd1fd1e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,7 +10,7 @@ node_js:
   - '6'
   - '4'
 before_install:
-  - npm i -g npm@^3.0.0
+  - npm i -g npm@^4.0.0
 before_script:
   - npm prune
 script: