diff --git a/pkgs/development/libraries/haskell/groups/default.nix b/pkgs/development/libraries/haskell/groups/default.nix
index a0309497070..b2cf829f12e 100644
--- a/pkgs/development/libraries/haskell/groups/default.nix
+++ b/pkgs/development/libraries/haskell/groups/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "groups";
-  version = "0.3.0.0";
-  sha256 = "07swv09l98fxh563w1x8n8xzgh9q7n9dbx4gx3i77kwi72vmxl8x";
+  version = "0.4.0.0";
+  sha256 = "1kp8h3617cimya8nnadljyy4vk66dzl5nzfm900k2gh3ci8kja6k";
   meta = {
     description = "Haskell 98 groups";
     license = self.stdenv.lib.licenses.bsd3;