1 files changed, 9 insertions, 5 deletions
diff --git a/pkgs/development/libraries/haskell/comonad/default.nix b/pkgs/development/libraries/haskell/comonad/default.nix
index 472e4e315c1c..9457a2ad44dc 100644
--- a/pkgs/development/libraries/haskell/comonad/default.nix
+++ b/pkgs/development/libraries/haskell/comonad/default.nix
@@ -1,14 +1,18 @@
-{ cabal, doctest, filepath, semigroups, tagged, transformers }:
+{ cabal, contravariant, distributive, doctest, filepath, mtl
+, semigroups, tagged, transformers
+}:
 
 cabal.mkDerivation (self: {
   pname = "comonad";
-  version = "3.1";
-  sha256 = "0sl9b3f1vwpjdvnrxv7b8n512w05pv4in6qx3l4sbksdp1zjvcyv";
-  buildDepends = [ semigroups tagged transformers ];
+  version = "4.0";
+  sha256 = "1f57wqxy1la59kippbj924prnj53a5hwc2ppg48n9xx2wfr63iha";
+  buildDepends = [
+    contravariant distributive mtl semigroups tagged transformers
+  ];
   testDepends = [ doctest filepath ];
   meta = {
     homepage = "http://github.com/ekmett/comonad/";
-    description = "Haskell 98 compatible comonads";
+    description = "Comonads";
     license = self.stdenv.lib.licenses.bsd3;
     platforms = self.ghc.meta.platforms;
   };