diff --git a/pkgs/development/haskell-modules/configuration-hackage2nix.yaml b/pkgs/development/haskell-modules/configuration-hackage2nix.yaml
index 040c6f8f03f..1dfd973c446 100644
--- a/pkgs/development/haskell-modules/configuration-hackage2nix.yaml
+++ b/pkgs/development/haskell-modules/configuration-hackage2nix.yaml
@@ -2681,6 +2681,7 @@ extra-packages:
   - haddock-api == 2.15.*               # required on GHC 7.8.x
   - haddock-api == 2.16.*               # required on GHC 7.10.x
   - haddock-library == 1.2.*            # required for haddock-api-2.16.x
+  - haddock-library == 1.4.4            # required for haddock-api-2.18.x
   - happy <1.19.6                       # newer versions break Agda
   - haskell-gi-overloading == 0.0       # gi-* packages use this dependency to disable overloading support
   - haskell-src-exts == 1.19.*          # required by hindent and structured-haskell-mode