diff --git a/.travis.yml b/.travis.yml
index 52e8490..c3767d5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,7 +13,7 @@ addons:
     - gcc-4.8
     - g++-4.8
 before_script:
-- sudo apt-get install libwxgtk2.8-dev libwxgtk2.8-dbg
+- sudo apt-get -y install libwxgtk2.8-dev libwxgtk2.8-dbg
 script: make
 notifications:
   email: true
\ No newline at end of file