diff --git a/pkgs/development/libraries/haskell/reducers/default.nix b/pkgs/development/libraries/haskell/reducers/default.nix
index 335cee497ea4..7d7ad6d49175 100644
--- a/pkgs/development/libraries/haskell/reducers/default.nix
+++ b/pkgs/development/libraries/haskell/reducers/default.nix
@@ -11,6 +11,7 @@ cabal.mkDerivation (self: {
     comonad fingertree hashable keys pointed semigroupoids semigroups
     text transformers unorderedContainers
   ];
+  jailbreak = true;
   meta = {
     homepage = "http://github.com/ekmett/reducers/";
     description = "Semigroups, specialized containers and a general map/reduce framework";