diff --git a/pkgs/development/libraries/haskell/Chart-gtk/default.nix b/pkgs/development/libraries/haskell/Chart-gtk/default.nix
index 9dbb3c8ae9a..0ce13bd8737 100644
--- a/pkgs/development/libraries/haskell/Chart-gtk/default.nix
+++ b/pkgs/development/libraries/haskell/Chart-gtk/default.nix
@@ -4,8 +4,8 @@
 
 cabal.mkDerivation (self: {
   pname = "Chart-gtk";
-  version = "1.2.4";
-  sha256 = "16dfmkls341cmk13j1z3rw2wxdvxr5rqsv1ff4qjhjak9j7hkqjq";
+  version = "1.3";
+  sha256 = "1bi7gim31w3xf6jsd2hkwhkhw1i9c4dmxnm3f46336k9rsxn59ph";
   buildDepends = [ cairo Chart ChartCairo colour gtk mtl time ];
   meta = {
     homepage = "https://github.com/timbod7/haskell-chart/wiki";