diff --git a/pkgs/development/libraries/haskell/hourglass/default.nix b/pkgs/development/libraries/haskell/hourglass/default.nix
index 5b11121a9efc..16b8adfa31db 100644
--- a/pkgs/development/libraries/haskell/hourglass/default.nix
+++ b/pkgs/development/libraries/haskell/hourglass/default.nix
@@ -4,8 +4,8 @@
 
 cabal.mkDerivation (self: {
   pname = "hourglass";
-  version = "0.2.2";
-  sha256 = "015ipy9adi67nfddjsw9c0ihn0banghgawjli0lgrmiyjz01610c";
+  version = "0.2.5";
+  sha256 = "08nw9zqa0y09lw0c6qlh9pn8vr6h03mw1i7n7w0y3fv94az9vg9v";
   buildDepends = [ deepseq ];
   testDepends = [
     deepseq mtl tasty tastyHunit tastyQuickcheck time