diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index bd640f731dad..50ee87f53b7b 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -143,6 +143,7 @@ self: super: {
   feldspar-signal = dontHaddock super.feldspar-signal; # https://github.com/markus-git/feldspar-signal/issues/1
   hoodle-core = dontHaddock super.hoodle-core;
   hsc3-db = dontHaddock super.hsc3-db;
+  classy-prelude-yesod = dontHaddock super.classy-prelude-yesod; # https://github.com/haskell/haddock/issues/979
 
   # https://github.com/techtangents/ablist/issues/1
   ABList = dontCheck super.ABList;
diff --git a/pkgs/development/haskell-modules/configuration-hackage2nix.yaml b/pkgs/development/haskell-modules/configuration-hackage2nix.yaml
index c2cbdc2a3b4e..4d588a83b6e5 100644
--- a/pkgs/development/haskell-modules/configuration-hackage2nix.yaml
+++ b/pkgs/development/haskell-modules/configuration-hackage2nix.yaml
@@ -3479,7 +3479,6 @@ broken-packages:
   - ClassLaws
   - classy-miso
   - classy-parallel
-  - classy-prelude-yesod
   - ClassyPrelude
   - clay
   - clckwrks
diff --git a/pkgs/development/haskell-modules/hackage-packages.nix b/pkgs/development/haskell-modules/hackage-packages.nix
index eaf3a5a66f6f..958c7096799d 100644
--- a/pkgs/development/haskell-modules/hackage-packages.nix
+++ b/pkgs/development/haskell-modules/hackage-packages.nix
@@ -49676,7 +49676,6 @@ self: {
        description = "Provide a classy prelude including common Yesod functionality";
        license = stdenv.lib.licenses.mit;
        hydraPlatforms = stdenv.lib.platforms.none;
-       broken = true;
      }) {};
 
   "classyplate" = callPackage