diff --git a/tox.ini b/tox.ini
index 2f9af2f..d683d71 100644
--- a/tox.ini
+++ b/tox.ini
@@ -5,11 +5,10 @@
 
 [tox]
 toxworkdir = {env:TMPDIR:/tmp}/tox-{env:USER}/wcs-olap/{env:BRANCH_NAME:}
-envlist = {py2,py3}-coverage
+envlist = py2-coverage
 
 [testenv]
 usedevelop = true
-basepython = python2
 setenv =
 	coverage: COVERAGE=--junit-xml=junit.xml --cov=wcs_olap --cov-report xml --cov-report html
 	WCSCTL=wcs/wcsctl.py