diff --git a/pkgs/development/compilers/ciao/default.nix b/pkgs/development/compilers/ciao/default.nix
index 4d26678605e7..a5cdcb82bc05 100644
--- a/pkgs/development/compilers/ciao/default.nix
+++ b/pkgs/development/compilers/ciao/default.nix
@@ -28,5 +28,6 @@ stdenv.mkDerivation rec {
     license = licenses.lgpl21;
     maintainers = with maintainers; [ suhr ];
     platforms = platforms.unix;
+    broken = stdenv.isDarwin; # never built on Hydra https://hydra.nixos.org/job/nixpkgs/staging-next/ciao.x86_64-darwin
   };
 }