diff --git a/pkgs/development/python-modules/pytautulli/default.nix b/pkgs/development/python-modules/pytautulli/default.nix
index b96a3de3f7ad..aee51ae764f8 100644
--- a/pkgs/development/python-modules/pytautulli/default.nix
+++ b/pkgs/development/python-modules/pytautulli/default.nix
@@ -39,6 +39,10 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
+  pytestFlagsArray = [
+    "--asyncio-mode=legacy"
+  ];
+
   pythonImportsCheck = [
     "pytautulli"
   ];