diff --git a/tox.ini b/tox.ini
index e9fdad6d..3d99c28b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 envlist = py37,pypy,pep8,releasenotes
-minversioon = 3.1.1
+minversion = 3.1.1
 skipsdist = True
 # this allows tox to infer the base python from the environment name
 # and override any basepython configured in this file