diff --git a/pkgs/development/libraries/haskell/yesod/default.nix b/pkgs/development/libraries/haskell/yesod/default.nix
index 02162fade6f..3221d003d5c 100644
--- a/pkgs/development/libraries/haskell/yesod/default.nix
+++ b/pkgs/development/libraries/haskell/yesod/default.nix
@@ -7,8 +7,8 @@
 
 cabal.mkDerivation (self: {
   pname = "yesod";
-  version = "0.9.2";
-  sha256 = "1074vbrab8c0nrmkv1fn4rm65fyfw08b3mj498cxala3nm382whd";
+  version = "0.9.2.1";
+  sha256 = "08mnybxdcswhxc1gqgjsy1mx43cp6b78javjcqgbrsfd8f4h9xzq";
   isLibrary = true;
   isExecutable = true;
   buildDepends = [