diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index 14619415348..49871dc7d7e 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -686,9 +686,6 @@ self: super: {
   # The latest Hoogle needs versions not yet in LTS Haskell 7.x.
   hoogle = super.hoogle.override { haskell-src-exts = self.haskell-src-exts_1_19_1; };
 
-  # Needs new version.
-  haskell-src-exts-simple = super.haskell-src-exts-simple.override { haskell-src-exts = self.haskell-src-exts_1_19_1; };
-
   # https://github.com/Philonous/hs-stun/pull/1
   # Remove if a version > 0.1.0.1 ever gets released.
   stunclient = overrideCabal super.stunclient (drv: {