diff --git a/.travis.yml b/.travis.yml
index 49ebec7..6af88d9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,7 +2,7 @@ language: node_js
 node_js:
 - '4.2.4'
 before_install:
-- sudo add-apt-repository ppa:ubuntu-toolchain-r/test
+- sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y
 - sudo apt-get update
 - sudo apt-get upgrade
 - sudo apt-get dist-upgrade -y