diff --git a/doc/doc-support/lib-function-docs.nix b/doc/doc-support/lib-function-docs.nix
index 61671bd39059b..51b4601975c32 100644
--- a/doc/doc-support/lib-function-docs.nix
+++ b/doc/doc-support/lib-function-docs.nix
@@ -95,7 +95,7 @@ stdenvNoCC.mkDerivation {
     fileset = ../../lib;
   };
 
-  buildInputs = [
+  nativeBuildInputs = [
     nixdoc
     nix
   ];
diff --git a/doc/tests/manpage-urls.nix b/doc/tests/manpage-urls.nix
index 214c236160098..913aebe4ebe80 100644
--- a/doc/tests/manpage-urls.nix
+++ b/doc/tests/manpage-urls.nix
@@ -17,7 +17,7 @@ invalidateFetcherByDrvHash (
     {
       nativeBuildInputs = [
         cacert
-        (python3.withPackages (p: [
+        (python3.pythonOnBuildForHost.withPackages (p: [
           p.aiohttp
           p.rich
           p.structlog