diff --git a/ci/default.nix b/ci/default.nix
index 6ade8164d503..eb7b45e4bbb5 100644
--- a/ci/default.nix
+++ b/ci/default.nix
@@ -38,6 +38,17 @@ let
       check = treefmt.check nixFilesSrc;
     };
 
+  # nixos-render-docs and nixos-render-docs-redirects
+  # Should be used from tree to build the matching in-tree documentation
+  docPkgs = pkgs.extend (
+    final: prev: {
+      nixos-render-docs = final.callPackage ../pkgs/by-name/ni/nixos-render-docs/package.nix { };
+      nixos-render-docs-redirects =
+        final.callPackage ../pkgs/by-name/ni/nixos-render-docs-redirects/package.nix
+          { };
+    }
+  );
+
 in
 rec {
   inherit pkgs fmt;
@@ -53,7 +64,7 @@ rec {
   # CI jobs
   lib-tests = import ../lib/tests/release.nix { inherit pkgs; };
   manual-nixos = (import ../nixos/release.nix { }).manual.${system} or null;
-  manual-nixpkgs = (import ../doc { inherit pkgs; });
+  manual-nixpkgs = (import ../doc { pkgs = docPkgs; });
   nixpkgs-vet = pkgs.callPackage ./nixpkgs-vet.nix {
     nix = pkgs.nixVersions.latest;
   };