1 files changed, 3 insertions, 4 deletions
diff --git a/pkgs/development/python-modules/u-msgpack-python/default.nix b/pkgs/development/python-modules/u-msgpack-python/default.nix
index cbb3f9bfa8f..aed68f3ad59 100644
--- a/pkgs/development/python-modules/u-msgpack-python/default.nix
+++ b/pkgs/development/python-modules/u-msgpack-python/default.nix
@@ -1,6 +1,6 @@
 { buildPythonPackage
 , lib
-, fetchurl
+, fetchPypi
 , glibcLocales
 , python
 }:
@@ -8,10 +8,9 @@
 buildPythonPackage rec {
   pname = "u-msgpack-python";
   version = "2.5.0";
-  name = "${pname}-${version}";
 
-  src = fetchurl {
-    url = "mirror://pypi/${builtins.substring 0 1 pname}/${pname}/${name}.tar.gz";
+  src = fetchPypi {
+    inherit pname version;
     sha256 = "7ff18ae3721fa75571f9329c08f7c0120416a6ae36194bd8674f65b3b78d0702";
   };