diff --git a/pkgs/development/python-modules/python-kasa/default.nix b/pkgs/development/python-modules/python-kasa/default.nix
index d4c9524c9edd..7f55dd64b94e 100644
--- a/pkgs/development/python-modules/python-kasa/default.nix
+++ b/pkgs/development/python-modules/python-kasa/default.nix
@@ -44,7 +44,7 @@ buildPythonPackage rec {
   ];
 
   pytestFlagsArray = [
-    "--asyncio-mode=legacy"
+    "--asyncio-mode=auto"
   ];
 
   disabledTestPaths = [