diff --git a/pkgs/tools/networking/findomain/default.nix b/pkgs/tools/networking/findomain/default.nix
index 3c60f5373a1..ddcb8579318 100644
--- a/pkgs/tools/networking/findomain/default.nix
+++ b/pkgs/tools/networking/findomain/default.nix
@@ -4,6 +4,7 @@
 , rustPlatform
 , installShellFiles
 , perl
+, libiconv
 , Security
 }:
 
@@ -21,7 +22,7 @@ rustPlatform.buildRustPackage rec {
   cargoSha256 = "sha256-FDiIM1LlWEFmiIvebdCsznkB7egspNKhY6xUXB838g8=";
 
   nativeBuildInputs = [ installShellFiles perl ];
-  buildInputs = lib.optional stdenv.isDarwin Security;
+  buildInputs = lib.optionals stdenv.isDarwin [ libiconv Security ];
 
   postInstall = ''
     installManPage ${pname}.1