diff --git a/pkgs/development/python-modules/requests/default.nix b/pkgs/development/python-modules/requests/default.nix
index f5b021801f41..ffa8c24339e1 100644
--- a/pkgs/development/python-modules/requests/default.nix
+++ b/pkgs/development/python-modules/requests/default.nix
@@ -31,21 +31,15 @@ buildPythonPackage rec {
     ./0001-Prefer-NixOS-Nix-default-CA-bundles-over-certifi.patch
   ];
 
-  postPatch = ''
-    # Use latest idna
-    substituteInPlace setup.py \
-      --replace ",<3" ""
-  '';
-
   propagatedBuildInputs = [
     certifi
     idna
     urllib3
     chardet
-  ] ++ lib.optionals (isPy3k) [
+  ] ++ lib.optionals isPy3k [
     brotlicffi
     charset-normalizer
-  ] ++ lib.optionals (isPy27) [
+  ] ++ lib.optionals isPy27 [
     brotli
   ];