diff --git a/extras/bundlers.nix b/extras/bundlers.nix
index c4197e2..e83bb5f 100644
--- a/extras/bundlers.nix
+++ b/extras/bundlers.nix
@@ -1,3 +1,5 @@
+# Tests in: ../dev/tests/eval-tests.nix (bundlersExample)
+
 { lib
 , flake-parts-lib
 , ...
@@ -19,9 +21,14 @@ mkTransposedPerSystemModule {
     type = types.lazyAttrsOf (types.functionTo types.package);
     default = { };
     description = ''
-      An attribute set of bundlers to be used by [`nix bundle`](https://nixos.org/manual/nix/stable/command-ref/new-cli/nix3-bundle.html).
+      An attribute set of bundlers to be used by [`nix bundle`](https://nix.dev/manual/nix/latest/command-ref/new-cli/nix3-bundle.html).
 
-      `nix bundle --bundler .#<name>` <derivation> will bundle <derivation> using the bundler `bundlers.<name>`.
+      Bundlers are functions that accept a derivation and return a derivation.
+      They package application closures into formats usable outside the Nix store.
+
+      `nix bundle --bundler .#<name> .#<package>` bundles `<package>` using bundler `<name>`.
+
+      Define a `default` bundler to use `nix bundle --bundler .#`.
     '';
   };
   file = ./bundlers.nix;