diff --git a/doc/docgen.zig b/doc/docgen.zig
index 41fd9e8f1eb7a9f3d853f5746bc3263683a8fa2f..07636fd1527a4888477c39970a93ff9e7f19c7b6 100644
--- a/doc/docgen.zig
+++ b/doc/docgen.zig
@@ -1424,6 +1424,7 @@ fn genHtml(
                             const result = try ChildProcess.exec(.{
                                 .allocator = allocator,
                                 .argv = build_args.items,
+                                .cwd = tmp_dir_name,
                                 .env_map = &env_map,
                                 .max_output_bytes = max_doc_file_size,
                             });