diff --git a/tox.ini b/tox.ini
index 06eda94..d966308 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 minversion = 2.0
-envlist = py34,py27,pypy,pep8
+envlist = pep8
 skipsdist = True
 
 [testenv]
@@ -15,7 +15,7 @@
 [testenv:pep8]
 commands =
   sh ./tools/misc-sanity-checks.sh
-  flake8 {posargs}
+  flake8
 whitelist_externals =
   sh