diff --git a/pkgs/by-name/zd/zdelta/package.nix b/pkgs/by-name/zd/zdelta/package.nix
index fd0cf1ae08b4..41f3573b5450 100644
--- a/pkgs/by-name/zd/zdelta/package.nix
+++ b/pkgs/by-name/zd/zdelta/package.nix
@@ -24,5 +24,7 @@ stdenv.mkDerivation {
     homepage = "https://web.archive.org/web/20160316212948/http://cis.poly.edu/zdelta/";
     platforms = platforms.all;
     license = licenses.zlib;
+    # last successful hydra build on darwin was in 2024
+    broken = stdenv.hostPlatform.isDarwin;
   };
 }