diff --git a/tox.ini b/tox.ini
index 9ec5b9a83..e676b71b7 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,12 +1,11 @@
 [tox]
 distshare={homedir}/.tox/distshare
-envlist=flakes,py25,py26,py27,pypy,py27-nobyte,py32,py33,py27-xdist,py33-xdist,trial
+envlist=flakes,py25,py26,py27,pypy,py27-pexpect,py33-pexpect,py27-nobyte,py32,py33,py27-xdist,py33-xdist,trial
 
 [testenv]
 changedir=testing
 commands= py.test --lsof -rfsxX --junitxml={envlogdir}/junit-{envname}.xml []
 deps=
-    pexpect
     nose
 
 [testenv:genscript]
@@ -41,6 +40,20 @@ commands=
   py.test -n3 -rfsxX \
         --junitxml={envlogdir}/junit-{envname}.xml testing
 
+[testenv:py27-pexpect]
+changedir=testing
+basepython=python2.7
+deps=pexpect
+commands=
+  py.test -rfsxX test_pdb.py test_terminal.py test_unittest.py
+
+[testenv:py33-pexpect]
+changedir=testing
+basepython=python2.7
+deps={[testenv:py27-pexpect]deps}
+commands=
+  py.test -rfsxX test_pdb.py test_terminal.py test_unittest.py
+
 [testenv:py27-nobyte]
 changedir=.
 basepython=python2.7
@@ -55,7 +68,6 @@ commands=
 [testenv:trial]
 changedir=.
 deps=twisted
-     pexpect
 commands=
   py.test -rsxf \
         --junitxml={envlogdir}/junit-{envname}.xml {posargs:testing/test_unittest.py}