diff --git a/pkgs/development/libraries/haskell/semigroupoids/default.nix b/pkgs/development/libraries/haskell/semigroupoids/default.nix
index 97389362682..037bef6b179 100644
--- a/pkgs/development/libraries/haskell/semigroupoids/default.nix
+++ b/pkgs/development/libraries/haskell/semigroupoids/default.nix
@@ -6,8 +6,8 @@
 
 cabal.mkDerivation (self: {
   pname = "semigroupoids";
-  version = "4.0.2.1";
-  sha256 = "00ga4spbnvwnk7j4h7zjw3bkd98glaganhcwq947ffadc0nansb1";
+  version = "4.0.4";
+  sha256 = "0yk536pbjblncpjinl739lppxsvb0w7z3hgrj43c0dqam0dyr38r";
   buildDepends = [
     comonad contravariant distributive semigroups transformers
   ];