diff --git a/test-requirements.txt b/test-requirements.txt
index eac8b1c63..952b4682e 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -4,8 +4,11 @@
 hacking<0.11,>=0.10.0
 pylint==1.4.5 # GPLv2
 
+fixtures>=3.0.0 # Apache-2.0/BSD
+mock>=2.0 # BSD
 oslotest>=1.10.0 # Apache-2.0
 testrepository>=0.0.18 # Apache-2.0/BSD
+testtools>=1.4.0 # MIT
 
 # Doc requirements
 sphinx!=1.6.1,>=1.5.1 # BSD
diff --git a/tox.ini b/tox.ini
index c8cd4e2e5..d2954b399 100644
--- a/tox.ini
+++ b/tox.ini
@@ -17,8 +17,6 @@ commands =
   dib-lint
 
 [testenv:pylint]
-setenv = VIRTUAL_ENV={envdir}
-deps = pylint
 commands = pylint --rcfile pylint.cfg diskimage_builder
 
 [testenv:venv]