diff --git a/requirements.txt b/requirements.txt
index f06ba1a8..735ae110 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,6 +9,6 @@
 flake8==2.1.0
 pylint==1.2.1
 coverage>=3.7.1
-nose>=1.3.1
+nose>=1.3.6
 mock>=1.1.2
 funcsigs>=0.4
diff --git a/tox.ini b/tox.ini
index 91263640..701043f2 100644
--- a/tox.ini
+++ b/tox.ini
@@ -7,6 +7,7 @@
 envlist = py27
 
 [testenv]
+sitepackages=False
 commands = nosetests tests
            flake8
 deps = -r{toxinidir}/requirements.txt