diff --git a/test-requirements.txt b/test-requirements.txt
index e2cbaaf..b86cb6e 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,14 +1,13 @@
 hacking>=0.11.0,<0.12  # Apache-2.0
 loremipsum
-mock!=1.1.1,<=1.3.0
+mock
 sphinx>=1.5.1  # BSD
-discover
 coverage>=3.6  # Apache-2.0
 fixtures>=0.3.14
-python-subunit
-sphinxcontrib-fulltoc  # Apache-2.0
+python-subunit>=1.3.0
+sphinxcontrib-fulltoc>=1.2.0  # Apache-2.0
 testrepository>=0.0.17
 testscenarios>=0.4
 testtools>=0.9.32
 PyYAML>=3.1.0
-psutil>=1.1.1,<2.0.0  # BSD
+psutil>=3.2.2  # BSD