diff --git a/test-requirements.txt b/test-requirements.txt
index 9d27daa..026875b 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -3,7 +3,7 @@
 # process, which may cause wedges in the gate later.
 hacking!=0.13.0,<0.14,>=0.12.0 # Apache-2.0
 
-coverage>=4.0 # Apache-2.0
+coverage!=4.4,>=4.0 # Apache-2.0
 mock>=2.0 # BSD
 mox>=0.5.3 # Apache-2.0
 mox3!=0.19.0,>=0.7.0 # Apache-2.0