diff --git a/tox.ini b/tox.ini
index 26661d5..6f0169e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,10 @@
 [tox]
-envlist = py39
+minversion = 3.8.0
+envlist = py38,py39,py310
 
 [testenv]
 deps = pytest
-commands = pytest
\ No newline at end of file
+commands = pytest
+
+[flake8]
+max-line-length=125
\ No newline at end of file