1 files changed, 2 insertions, 1 deletions
diff --git a/tox.ini b/tox.ini
index 4c47f960..719a24d7 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,8 +1,9 @@
 [tox]
 minversion = 3.18.0
-skipsdist = True
 envlist = py3,functional,pep8
 ignore_basepython_conflict=true
+requires =
+  tox<4
 
 [testenv]
 usedevelop = True