diff --git a/pkgs/development/libraries/haskell/mime-mail/default.nix b/pkgs/development/libraries/haskell/mime-mail/default.nix
index 6303cbb8f4ea..d24bf5719bde 100644
--- a/pkgs/development/libraries/haskell/mime-mail/default.nix
+++ b/pkgs/development/libraries/haskell/mime-mail/default.nix
@@ -2,12 +2,11 @@
 
 cabal.mkDerivation (self: {
   pname = "mime-mail";
-  version = "0.4.1.1";
-  sha256 = "01dshc6ysjkab9hl851948l6k0lwgm1fqmyk97zy7wckb252w6y4";
+  version = "0.4.1.2";
+  sha256 = "01dw9zvgxmwg0jslw14a9kjrmyjvwla8bw40w2426ifdwwxb3ywy";
   buildDepends = [
     base64Bytestring blazeBuilder filepath random text
   ];
-  jailbreak = true;
   meta = {
     homepage = "http://github.com/snoyberg/mime-mail";
     description = "Compose MIME email messages";