diff --git a/pkgs/development/libraries/haskell/semigroups/default.nix b/pkgs/development/libraries/haskell/semigroups/default.nix
index 240062493e3..1a412aec908 100644
--- a/pkgs/development/libraries/haskell/semigroups/default.nix
+++ b/pkgs/development/libraries/haskell/semigroups/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "semigroups";
-  version = "0.8.4.1";
-  sha256 = "05wv5amgg3nqr1if936zl330sv1k4i9p8xzdmgxsmchp4lshyr6n";
+  version = "0.8.5";
+  sha256 = "0dnxqqxfyxj0mpy524nvgwagsp6ynadmh2yr4k5159rzbg2xgz90";
   meta = {
     homepage = "http://github.com/ekmett/semigroups/";
     description = "Haskell 98 semigroups";