diff --git a/test-requirements.txt b/test-requirements.txt
index 085fef3..c3434fb 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -8,7 +8,7 @@
 #
 # Hacking should appear first in case something else depends on pep8
 hacking<0.11,>=0.10.2 # Apache-2.0
-coverage>=3.6 # Apache-2.0
+coverage>=4.0 # Apache-2.0
 django-nose>=1.4.4 # BSD
 mock>=2.0 # BSD
 mox3>=0.7.0 # Apache-2.0