diff --git a/tox.ini b/tox.ini
index b6cc0cd..e26580b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -24,7 +24,7 @@ commands =
     stestr run {posargs}
 
 [testenv:cover]
-basepython = python2.7
+basepython = python3
 
 commands =
   coverage erase