diff --git a/requirements.txt b/requirements.txt
index dd428411c..d759e1371 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,3 +5,4 @@ langdetect==1.0.5
 pyocr==0.3.1
 python-gnupg==0.3.8
 pytz==2015.7
+filemagic==1.6