diff --git a/.travis.yml b/.travis.yml
index 6af88d9..40b637f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,7 @@ node_js:
 before_install:
 - sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y
 - sudo apt-get update
-- sudo apt-get upgrade
+- sudo apt-get upgrade -y
 - sudo apt-get dist-upgrade -y
 deploy:
   provider: npm