Index: mongoengine-0.15.3/setup.py
===================================================================
--- mongoengine-0.15.3.orig/setup.py
+++ mongoengine-0.15.3/setup.py
@@ -55,7 +55,7 @@ CLASSIFIERS = [
 
 extra_opts = {
     'packages': find_packages(exclude=['tests', 'tests.*']),
-    'tests_require': ['nose', 'coverage==4.2', 'blinker', 'Pillow>=2.0.0']
+    'tests_require': ['nose', 'coverage>=4.2', 'blinker', 'Pillow>=2.0.0']
 }
 if sys.version_info[0] == 3:
     extra_opts['use_2to3'] = True