diff --git a/tox.ini b/tox.ini
index 082d2000..c164aa9c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 # For more information about tox, see https://tox.readthedocs.io/en/latest/
 [tox]
-requires = tox-conda
+envlist = py{39,310,311}-{linux,macos,windows}
 
 [gh-actions]
 python =