diff --git a/pkgs/development/libraries/haskell/snap/snap.nix b/pkgs/development/libraries/haskell/snap/snap.nix
index 224926de004e..80cdf575d70b 100644
--- a/pkgs/development/libraries/haskell/snap/snap.nix
+++ b/pkgs/development/libraries/haskell/snap/snap.nix
@@ -8,8 +8,8 @@
 
 cabal.mkDerivation (self: {
   pname = "snap";
-  version = "0.11.3.1";
-  sha256 = "0hlwpzrckq89wpa8603j7p3aghlqshrp3kzsdrryf44k24q3vgrj";
+  version = "0.12.0";
+  sha256 = "0nccmbvhwrcfkz4771bhc210mh2ic0i93ks1752ndgk3007rkiff";
   isLibrary = true;
   isExecutable = true;
   buildDepends = [
@@ -19,7 +19,6 @@ cabal.mkDerivation (self: {
     snapCore snapServer stm syb text time transformers
     unorderedContainers vector vectorAlgorithms xmlhtml
   ];
-  jailbreak = true;
   meta = {
     homepage = "http://snapframework.com/";
     description = "Top-level package for the Snap Web Framework";