diff --git a/.travis.yml b/.travis.yml
index 1a6587e..3dc43d8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,7 +13,7 @@ cache:
     - node_modules
 
 install:
-  - npm i -g npm@4.X
+  - npm i -g npm@4.5.X
   - npm install
   - echo `npm --version`