diff --git a/pkgs/development/python-modules/async_timeout/default.nix b/pkgs/development/python-modules/async_timeout/default.nix
index 650517d44d9..53010a2a031 100644
--- a/pkgs/development/python-modules/async_timeout/default.nix
+++ b/pkgs/development/python-modules/async_timeout/default.nix
@@ -1,22 +1,19 @@
 { lib
-, fetchurl
+, fetchPypi
 , buildPythonPackage
 , pytestrunner
 , pythonOlder
 }:
 
-let
+buildPythonPackage rec {
   pname = "async-timeout";
   version = "2.0.0";
-in buildPythonPackage rec {
-  name = "${pname}-${version}";
 
-  src = fetchurl {
-    url = "mirror://pypi/${builtins.substring 0 1 pname}/${pname}/${name}.tar.gz";
+  src = fetchPypi {
+    inherit pname version;
     sha256 = "c17d8ac2d735d59aa62737d76f2787a6c938f5a944ecf768a8c0ab70b0dea566";
   };
 
-  buildInputs = [ pytestrunner ];
   # Circular dependency on aiohttp
   doCheck = false;
 
@@ -27,4 +24,4 @@ in buildPythonPackage rec {
     homepage = https://github.com/aio-libs/async_timeout/;
     license = lib.licenses.asl20;
   };
-}
\ No newline at end of file
+}