diff --git a/pkgs/development/libraries/haskell/yesod-core/default.nix b/pkgs/development/libraries/haskell/yesod-core/default.nix
index b21ce4b00f0..17d3eb4427e 100644
--- a/pkgs/development/libraries/haskell/yesod-core/default.nix
+++ b/pkgs/development/libraries/haskell/yesod-core/default.nix
@@ -8,8 +8,8 @@
 
 cabal.mkDerivation (self: {
   pname = "yesod-core";
-  version = "1.0.1.2";
-  sha256 = "1c9ay0xv2s1kcj92ai0bj1gbml4k4w62n2mw7c5r6m88k8wmxh6z";
+  version = "1.0.1.3";
+  sha256 = "1rdj622zi12v9d7cxkn8w4q43k8c6gfz8wrpmvya76gqmg6h2gil";
   buildDepends = [
     aeson blazeBuilder blazeHtml blazeMarkup caseInsensitive cereal
     clientsession conduit cookie failure fastLogger hamlet httpTypes