diff --git a/pkgs/tools/system/gptman/default.nix b/pkgs/tools/system/gptman/default.nix
index 5209856edeb..648b68bcbc4 100644
--- a/pkgs/tools/system/gptman/default.nix
+++ b/pkgs/tools/system/gptman/default.nix
@@ -1,4 +1,4 @@
-{ lib, fetchFromGitHub, rustPlatform }:
+{ lib, stdenv, fetchFromGitHub, rustPlatform, libiconv }:
 
 rustPlatform.buildRustPackage rec {
   pname = "gptman";
@@ -13,6 +13,8 @@ rustPlatform.buildRustPackage rec {
 
   cargoSha256 = "1cp8cyrd7ab8r2j28b69c2p3ysix5b9hpsqk07cmzgqwwml0qj12";
 
+  buildInputs = lib.optional stdenv.isDarwin libiconv;
+
   meta = with lib; {
     description = "A CLI tool for Linux to copy a partition from one disk to another and more.";
     homepage = "https://github.com/cecton/gptman";