diff --git a/pkgs/development/python-modules/ruff-api/default.nix b/pkgs/development/python-modules/ruff-api/default.nix
index 43170c431214..296006018edb 100644
--- a/pkgs/development/python-modules/ruff-api/default.nix
+++ b/pkgs/development/python-modules/ruff-api/default.nix
@@ -5,6 +5,7 @@
   cargo,
   darwin,
   fetchFromGitHub,
+  libiconv,
   pythonOlder,
   rustc,
   rustPlatform,
@@ -43,6 +44,7 @@ buildPythonPackage rec {
   buildInputs = lib.optionals stdenv.isDarwin [
     darwin.apple_sdk.frameworks.CoreFoundation
     darwin.apple_sdk.frameworks.CoreServices
+    libiconv
   ];
 
   # Tests have issues at the moment, check with next update