diff --git a/pkgs/development/libraries/haskell/IORefCAS/default.nix b/pkgs/development/libraries/haskell/IORefCAS/default.nix
index 8b673dc56beb..980ab8c448cb 100644
--- a/pkgs/development/libraries/haskell/IORefCAS/default.nix
+++ b/pkgs/development/libraries/haskell/IORefCAS/default.nix
@@ -13,6 +13,8 @@ cabal.mkDerivation (self: {
     description = "Atomic compare and swap for IORefs and STRefs";
     license = self.stdenv.lib.licenses.bsd3;
     platforms = self.ghc.meta.platforms;
+    hydraPlatforms = self.stdenv.lib.platforms.none;
+    broken = true;
     maintainers = [ self.stdenv.lib.maintainers.andres ];
   };
 })