diff --git a/.travis.yml b/.travis.yml
index 99105a5..29185bc 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -19,7 +19,7 @@ addons:
 env:
   global:
     - TRAVIS_NODE_VERSION="6"
-    - COMPOSER_ROOT_VERSION="4.x-dev"
+    - COMPOSER_ROOT_VERSION="4.1.x-dev"
     - DISPLAY=":99"
     - XVFBARGS=":99 -ac -screen 0 1024x768x16"