diff --git a/circle.yml b/circle.yml
index 367dc10..34eca60 100644
--- a/circle.yml
+++ b/circle.yml
@@ -4,7 +4,7 @@ machine:
 dependencies:
   post:
     - sudo apt-get update
-    - sudo apt-get upgrade -y upstart
+    - sudo DEBIAN_FRONTEND=noninteractive apt-get upgrade -y upstart
     - >
       sudo apt-get install -y
       libgtk-3-0