diff --git a/pkgs/development/libraries/haskell/happstack/happstack-server.nix b/pkgs/development/libraries/haskell/happstack/happstack-server.nix
index 4d8e874a8bf..3b3d37bb0b8 100644
--- a/pkgs/development/libraries/haskell/happstack/happstack-server.nix
+++ b/pkgs/development/libraries/haskell/happstack/happstack-server.nix
@@ -5,8 +5,8 @@
 
 cabal.mkDerivation (self: {
   pname = "happstack-server";
-  version = "6.1.6";
-  sha256 = "1z4c2bymyyvhs47ynrlp4d2cwqws2d2isiwj82c33qcmk4znargg";
+  version = "6.2.2";
+  sha256 = "1nrvi3hf689bxvlzc9crav70dmnv3lagafsrc4gmnizqliw6p62g";
   isLibrary = true;
   isExecutable = true;
   buildDepends = [