diff --git a/tox.ini b/tox.ini
index b72dfd0a..d4a6a177 100644
--- a/tox.ini
+++ b/tox.ini
@@ -18,6 +18,7 @@ whitelist_externals = bash
 commands = bash -c "find {toxinidir} -not -wholename \*.tox/\* -and \( -name \*.sh -or -wholename \*.d/\* -and -not -name \*.md -and -not -name \*.rst -and -not -name \*.py \) -print0 | xargs -0 bashate -v"
 
 [testenv:pep8]
+basepython = python3
 setenv =
     ELEMENTS_DIR=elements
 commands =