diff --git a/tox.ini b/tox.ini
index 915981e0c..2ff83cbd4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -114,6 +114,7 @@ commands =
 
 
 [testenv:typechecks]
+basepython = python3
 skip_install = True
 deps =
     mypy