diff --git a/pkgs/development/libraries/haskell/generic-deriving/default.nix b/pkgs/development/libraries/haskell/generic-deriving/default.nix
index 27eecd552a6..c071aba7dec 100644
--- a/pkgs/development/libraries/haskell/generic-deriving/default.nix
+++ b/pkgs/development/libraries/haskell/generic-deriving/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "generic-deriving";
-  version = "1.3.1";
-  sha256 = "1z02j86lgn57ws0rfq2m0zb0m866k9afh9346k8bbwb5c4914wm3";
+  version = "1.4.0";
+  sha256 = "15av3l4m4qn5by41rkpdvp1kyp3fi9ixvy76wmyj20c46kjbmra7";
   meta = {
     description = "Generic programming library for generalised deriving";
     license = self.stdenv.lib.licenses.bsd3;