diff --git a/tox.ini b/tox.ini
index 5ca4ecf2..c8a2555c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,9 +1,8 @@
 [tox]
 toxworkdir = {env:TMPDIR:/tmp}/tox-{env:USER}/combo/{env:BRANCH_NAME:}
-envlist = coverage-py2-pylint
+envlist = coverage-py2-pylint,py3
 
 [testenv]
-basepython = python2
 usedevelop = True
 setenv =
   py2: WCS_MANAGE=wcs/wcsctl.py