diff --git a/circle.yml b/circle.yml
index 6630d03..d8c0f8f 100644
--- a/circle.yml
+++ b/circle.yml
@@ -7,6 +7,7 @@ machine:
 
 dependencies:
     pre:
+        - sudo apt-get purge -y ffmpeg
         - bash install-dependencies.sh
         
     override: