diff --git a/lib/phoenix/pubsub.ex b/lib/phoenix/pubsub.ex
index 6ae950da..44ae7b0b 100644
--- a/lib/phoenix/pubsub.ex
+++ b/lib/phoenix/pubsub.ex
@@ -132,6 +132,17 @@ defmodule Phoenix.PubSub do
     Registry.unregister(pubsub, topic)
   end
 
+  @doc """
+  Unsubscribes the caller from the PubSub adapter's topic taking the metadata into consideration
+  Unlike `unsubscribe/2` this function match on the metadata provided as option when subscribed
+
+  This is usually needed if you have multiple subscriptions for the same topic with different metadata
+  """
+  @spec unsubscribe(t, topic, metadata) :: :ok
+  def unsubscribe(pubsub, topic, metadata) when is_atom(pubsub) and is_binary(topic) do
+    Registry.unregister_match(pubsub, topic, metadata)
+  end
+
   @doc """
   Broadcasts message on given topic across the whole cluster.