--- test_requirements.txt.orig	2015-11-20 05:42:25 UTC
+++ test_requirements.txt
@@ -1,4 +1,2 @@
-tox>=1.7.2
-vcrpy==1.1.2
-mock==1.0.1
-unittest2   # Comment this line out if using Python 3.
+vcrpy>=1.1.2
+mock>=1.0.1