diff --git a/pkgs/development/libraries/haskell/yesod/default.nix b/pkgs/development/libraries/haskell/yesod/default.nix
index d195d59dd312..fd68a161c68c 100644
--- a/pkgs/development/libraries/haskell/yesod/default.nix
+++ b/pkgs/development/libraries/haskell/yesod/default.nix
@@ -6,8 +6,8 @@
 
 cabal.mkDerivation (self: {
   pname = "yesod";
-  version = "1.2.1.1";
-  sha256 = "1zx0r02k6znrm62wmhjcdlad3dil93kp6p862rvsvbkazwfy768a";
+  version = "1.2.2";
+  sha256 = "06ac99srh44rwj6mwyl7h0d0ckyb19dvpabylbawmks25v5ig0y3";
   buildDepends = [
     aeson blazeHtml blazeMarkup dataDefault hamlet monadControl
     networkConduit safe shakespeareCss shakespeareJs text transformers