diff --git a/pkgs/development/python-modules/httpcore/default.nix b/pkgs/development/python-modules/httpcore/default.nix
index 7781dbe8b319..de2f9b00f538 100644
--- a/pkgs/development/python-modules/httpcore/default.nix
+++ b/pkgs/development/python-modules/httpcore/default.nix
@@ -44,12 +44,6 @@ buildPythonPackage rec {
     uvicorn
   ];
 
-  postPatch = ''
-    # The anyio 3.1.0 release is not picked-up proberly
-    substituteInPlace setup.py --replace "anyio==3.*" "anyio"
-  '';
-
-
   disabledTestPaths = [
     # these tests fail during dns lookups: httpcore.ConnectError: [Errno -2] Name or service not known
     "tests/test_threadsafety.py"