diff --git a/pkgs/by-name/ma/matrix-authentication-service/package.nix b/pkgs/by-name/ma/matrix-authentication-service/package.nix
index 5e4ebdcdee74..96318e3d4b0b 100644
--- a/pkgs/by-name/ma/matrix-authentication-service/package.nix
+++ b/pkgs/by-name/ma/matrix-authentication-service/package.nix
@@ -12,6 +12,7 @@
   stdenv,
   darwin,
   open-policy-agent,
+  cctools,
 }:
 
 rustPlatform.buildRustPackage rec {
@@ -46,7 +47,7 @@ rustPlatform.buildRustPackage rec {
     npmHooks.npmConfigHook
     nodejs
     (python3.withPackages (ps: [ ps.setuptools ])) # Used by gyp
-  ];
+  ] ++ lib.optional stdenv.isDarwin cctools; # libtool used by gyp;
 
   buildInputs =
     [