diff --git a/pkgs/development/haskell-modules/configuration-ghc-7.10.x.nix b/pkgs/development/haskell-modules/configuration-ghc-7.10.x.nix
index 789c40d5ca86..70cd4acd1646 100644
--- a/pkgs/development/haskell-modules/configuration-ghc-7.10.x.nix
+++ b/pkgs/development/haskell-modules/configuration-ghc-7.10.x.nix
@@ -277,4 +277,9 @@ self: super: {
     buildDepends = [ primitive ];
     license = pkgs.stdenv.lib.licenses.bsd3;
   }) {};
+
+  # diagrams/monoid-extras#19
+  monoid-extras = overrideCabal super.monoid-extras (drv: {
+    prePatch = "sed -i 's|4\.8|4.9|' monoid-extras.cabal";
+  });
 }