diff --git a/vendor/brr_lwd_ui/bindings/yjs/doc.ml b/vendor/brr_lwd_ui/bindings/yjs/doc.ml
index 439d4d7..023d91a 100644
--- a/vendor/brr_lwd_ui/bindings/yjs/doc.ml
+++ b/vendor/brr_lwd_ui/bindings/yjs/doc.ml
@@ -218,4 +218,8 @@ module Doc = struct
     Jv.call t "getMap" [| Jv.of_string name |] |> Map.of_jv
 
   let make () = Jv.new' global [||]
+
+  let transact t f =
+    let callback = Jv.callback ~arity:1 f in
+    Jv.call t "transact" [| callback |] |> ignore
 end
diff --git a/vendor/brr_lwd_ui/bindings/yjs/doc.mli b/vendor/brr_lwd_ui/bindings/yjs/doc.mli
index 6fc47ae..048cc20 100644
--- a/vendor/brr_lwd_ui/bindings/yjs/doc.mli
+++ b/vendor/brr_lwd_ui/bindings/yjs/doc.mli
@@ -65,4 +65,8 @@ module Doc : sig
   val make : unit -> t
   val get_array : t -> string -> Array.t
   val get_map : t -> string -> Map.t
+
+  val transact : t -> (unit -> unit) -> unit
+  (** Bundles multiple operations into one transaction. Observer calls and the
+      update event will be called only once per transaction. *)
 end