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