diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index 0a61c0accb4a..a08e38adebd4 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -675,7 +675,7 @@ self: super: {
         postPatch = ''
           substituteInPlace conf.py --replace "'.md': CommonMarkParser," ""
         '';
-        nativeBuildInputs = with pkgs.buildPackages.pythonPackages; [ sphinx recommonmark sphinx_rtd_theme ];
+        nativeBuildInputs = with pkgs.buildPackages.python3Packages; [ sphinx recommonmark sphinx_rtd_theme ];
         makeFlags = [ "html" ];
         installPhase = ''
           mv _build/html $out