diff --git a/README.md b/README.md
index 75f911f..41c4aa8 100644
--- a/README.md
+++ b/README.md
@@ -52,6 +52,9 @@ Docs
 Hint: To show a table of contents, click the button (![Github TOC button](docs/img/github-table-of-contents.svg)) in the
 top left corner of the documents.
 
+<!-- TODO-EXTERNAL: -->
+<!-- Change query to `nix-bitcoin` when upstream search has been fixed -->
+* [NixOS Options Search](https://search.nixos.org/flakes?channel=unstable&sort=relevance&type=options&query=bitcoin)
 * [Hardware requirements](docs/hardware.md)
 * [Installation](docs/install.md)
 * [Configuration and maintenance](docs/configuration.md)