diff --git a/pkgs/by-name/so/soupault/package.nix b/pkgs/by-name/so/soupault/package.nix
index 639af4136729..f14774c4865a 100644
--- a/pkgs/by-name/so/soupault/package.nix
+++ b/pkgs/by-name/so/soupault/package.nix
@@ -1,7 +1,9 @@
 { lib
+, darwin
 , fetchzip
 , ocamlPackages
 , soupault
+, stdenv
 , testers
 }:
 
@@ -23,6 +25,8 @@ ocamlPackages.buildDunePackage {
     hash = "sha256-vGTJUbAeYs/EYFykNSmCc4c9G66/Lz3BsUYnZQ8feFo=";
   };
 
+  nativeBuildInputs = lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [ darwin.sigtool ];
+
   buildInputs = with ocamlPackages; [
     base64
     camomile