diff --git a/pkgs/tools/audio/beets/default.nix b/pkgs/tools/audio/beets/default.nix
index 58a746ee1aa..a66b018678c 100644
--- a/pkgs/tools/audio/beets/default.nix
+++ b/pkgs/tools/audio/beets/default.nix
@@ -39,6 +39,7 @@ lib.makeExtensible (self: {
       hash = "sha256-yWwxYSzSSmx2UfCn0EBH23hQGZKSRn/c8ryvxLUeHdM=";
     };
     pluginOverrides = {
+      # unstable has a new plugin, so we register it here.
       limit = { };
     };
   };