diff --git a/pkgs/development/libraries/haskell/gitit/default.nix b/pkgs/development/libraries/haskell/gitit/default.nix
index db1b3c6c4671..b38774cd02bb 100644
--- a/pkgs/development/libraries/haskell/gitit/default.nix
+++ b/pkgs/development/libraries/haskell/gitit/default.nix
@@ -18,6 +18,7 @@ cabal.mkDerivation (self: {
     safe SHA syb tagsoup text time url utf8String xhtml xml xssSanitize
     zlib
   ];
+  jailbreak = true;
   meta = {
     homepage = "http://gitit.net";
     description = "Wiki using happstack, git or darcs, and pandoc";