diff --git a/tox.ini b/tox.ini
index d702101..84f63e1 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py26, py27, py31, py32, py33
+envlist = py26, py27, py31, py32, py33, pypy
 
 [base]
 deps =
@@ -27,4 +27,7 @@ deps = {[base]deps}
 deps = {[base]deps}
 
 [testenv:py33]
-deps = {[base]deps}
\ No newline at end of file
+deps = {[base]deps}
+
+[testenv:pypy]
+deps = {[base]deps}