diff --git a/tox.ini b/tox.ini
index 487b05e0..5900d803 100644
--- a/tox.ini
+++ b/tox.ini
@@ -51,8 +51,6 @@ exclude = .venv,.git,.tox,dist,*lib/python*,*egg,build,panel_template,dash_templ
 ignore = E127,E128,E501,H102,H238,H301,H306,H405,H904
 
 [testenv:lower-constraints]
-# TODO(someone) switch basepython to python3 as what most projects do
-basepython = python2.7
 deps =
   -c{toxinidir}/lower-constraints.txt
   -r{toxinidir}/test-requirements.txt