diff --git a/pkgs/development/python-modules/rpds-py/default.nix b/pkgs/development/python-modules/rpds-py/default.nix
index 77171b7c6bf..8b6eb61e72f 100644
--- a/pkgs/development/python-modules/rpds-py/default.nix
+++ b/pkgs/development/python-modules/rpds-py/default.nix
@@ -1,4 +1,5 @@
-{ lib
+{ stdenv
+, lib
 , buildPythonPackage
 , cargo
 , fetchPypi
@@ -6,6 +7,7 @@
 , pythonOlder
 , rustc
 , rustPlatform
+, libiconv
 }:
 
 buildPythonPackage rec {
@@ -34,6 +36,10 @@ buildPythonPackage rec {
     rustc
   ];
 
+  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
+    libiconv
+  ];
+
   nativeCheckInputs = [
     pytestCheckHook
   ];