diff --git a/circle.yml b/circle.yml
index 4d0b6b6..ecc1055 100644
--- a/circle.yml
+++ b/circle.yml
@@ -7,7 +7,9 @@ machine:
 
 dependencies:
     pre:
-        - sudo apt-get -y remove ffmpeg
+        - sudo apt-get -qq update
+        - sudo apt-get -qqy remove --purge ffmpeg
+        - sudo apt-get clean
         - bash install-dependencies.sh
         
     override: