diff --git a/pkgs/development/python-modules/aiosmtpd/default.nix b/pkgs/development/python-modules/aiosmtpd/default.nix
index 64f60ba0fcd0..9b7b0254bb5d 100644
--- a/pkgs/development/python-modules/aiosmtpd/default.nix
+++ b/pkgs/development/python-modules/aiosmtpd/default.nix
@@ -8,7 +8,6 @@
   pytestCheckHook,
   pythonOlder,
   setuptools,
-  typing-extensions,
 
   # for passthru.tests
   django,
@@ -32,8 +31,7 @@ buildPythonPackage rec {
   propagatedBuildInputs = [
     atpublic
     attrs
-  ]
-  ++ lib.optionals (pythonOlder "3.8") [ typing-extensions ];
+  ];
 
   nativeCheckInputs = [
     pytest-mock