diff --git a/pkgs/development/libraries/haskell/yesod-core/default.nix b/pkgs/development/libraries/haskell/yesod-core/default.nix
index cd8fa547e6c..c7cd1466072 100644
--- a/pkgs/development/libraries/haskell/yesod-core/default.nix
+++ b/pkgs/development/libraries/haskell/yesod-core/default.nix
@@ -9,8 +9,8 @@
 
 cabal.mkDerivation (self: {
   pname = "yesod-core";
-  version = "1.1.4.2";
-  sha256 = "0gbkjd6r2srw41hfnibp8sfzzlck0bnyrwkf4bbjgzivr6iy1lkf";
+  version = "1.1.5";
+  sha256 = "1mnmszka6fy5gps1y4bwpn0aq5vzxdxqyh2vrl7vii1lfl51yly7";
   buildDepends = [
     aeson blazeBuilder blazeHtml blazeMarkup caseInsensitive cereal
     clientsession conduit cookie failure fastLogger hamlet httpTypes