diff --git a/packages/nixpkgs-manual/default.nix b/packages/nixpkgs-manual/default.nix
index 519e40e..ea9ce35 100644
--- a/packages/nixpkgs-manual/default.nix
+++ b/packages/nixpkgs-manual/default.nix
@@ -37,6 +37,7 @@ let
         ) opt.declarations;
       };
   };
+  optionsJSONFile = "${optionsDoc.optionsJSON}/share/doc/nixos/options.json";
 in
 stdenvNoCC.mkDerivation {
   name = "nixpkgs-manual-md";
@@ -62,7 +63,7 @@ stdenvNoCC.mkDerivation {
     nixos-render-docs -j $NIX_BUILD_CORES options commonmark \
       --manpage-urls ./manpage-urls.json \
       --revision ${inputs.nixpkgs.rev} \
-      ${optionsDoc.optionsJSON}/share/doc/nixos/options.json ./options.md
+      ${optionsJSONFile} ./options.md
     substituteInPlace ./languages-frameworks/python.section.md --subst-var-by python-interpreter-table "$(<"$pythonInterpreterTablePath")"
 
     mv ./functions/library.md.in ./functions/library.md
@@ -88,6 +89,7 @@ stdenvNoCC.mkDerivation {
     mv stdenv.md out/stdenv/index.md
     mv using out/using-nixpkgs
     mv using-nixpkgs.md out/using-nixpkgs/index.md
+    cp ${optionsJSONFile} out/options.json
     pushd out
     find . -type f -exec perl -pi -e 's/\s*:::{.note}\n/!!! note\n\ \ /' {} \;
     find . -type f -exec perl -pi -e 's/\s*:::{.warning}\n/!!! warning\n\ \ /' {} \;