1 files changed, 2 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index 18af92a..42469da 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,7 +1,8 @@
 [tox]
-envlist = py26, py27, py33, py34, py35, pypy
+envlist = py27, py34, py35, py36, py37, pypy, pypy3
 
 [testenv]
+usedevelop = True
 deps =
     # Paste works on Python 3 since Paste 2.0
     Paste