diff --git a/test-requirements.txt b/test-requirements.txt
index 33277cb0..a0c3a007 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -5,6 +5,7 @@ hacking>=0.8.0,<0.9
 mock>=1.0
 
 # Unit testing
+coverage>=3.6
 fixtures>=0.3.14
 python-subunit>=0.0.18
 testrepository>=0.0.18