Setting up test environment for 3.3 and 3.4.
diff --git a/tox.ini b/tox.ini
index 1e868a0..6a3b10b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py26, py27
+envlist = py26, py27, py33, py34
 
 [testenv]
 deps = keyring
@@ -17,3 +17,9 @@
 
 [testenv:py27]
 commands = nosetests
+
+[testenv:py33]
+commands = nosetests
+
+[testenv:py34]
+commands = nosetests