diff --git a/tox.ini b/tox.ini
index 38d6e3aa..0ed3af80 100644
--- a/tox.ini
+++ b/tox.ini
@@ -29,7 +29,7 @@ commands =
   ostestr {posargs}
 
 [testenv:cover]
-basepython = python2.7
+basepython = python3
 commands =
   {[testenv]commands}
   coverage erase