diff --git a/.travis.yml b/.travis.yml
index 2d2d1ba..8e07dd8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,8 +4,8 @@ php:
   - '7.0'
   - '7.1'
 before_script:
-  - nvm install 5
-  - nvm use 5
+  - nvm install 4
+  - nvm use 4
   - npm i -g npm@5
   - npm i -g gulp
   - npm i