diff --git a/pkgs/development/haskell-modules/configuration-ghc-8.4.x.nix b/pkgs/development/haskell-modules/configuration-ghc-8.4.x.nix
index d953236784ee..ed39896863b4 100644
--- a/pkgs/development/haskell-modules/configuration-ghc-8.4.x.nix
+++ b/pkgs/development/haskell-modules/configuration-ghc-8.4.x.nix
@@ -66,11 +66,6 @@ self: super: {
     doCheck         = false;
   });
 
-  ## Needs bump to a versioned attribute
-  ## Setup: Encountered missing dependencies:
-  ## free >=4.9 && <5
-  either = super.either_5;
-
   ## Needs bump to a versioned attribute
   ## Setup: Encountered missing dependencies:
   ## Cabal <2.2