diff --git a/types/amazon-connect-streams/amazon-connect-streams-tests.ts b/types/amazon-connect-streams/amazon-connect-streams-tests.ts
index e25f0d4782..b953e2fd13 100644
--- a/types/amazon-connect-streams/amazon-connect-streams-tests.ts
+++ b/types/amazon-connect-streams/amazon-connect-streams-tests.ts
@@ -3,6 +3,7 @@ connect.core.initCCP(elem, { ccpUrl: "" }); // $ExpectType void
 
 // Types for below tests
 let agentCallback: connect.AgentCallback = () => {};
+let muteCallback: connect.MuteCallback = () => {};
 let agentConfiguration: connect.AgentConfiguration;
 let successFailOptions: connect.SuccessFailOptions;
 let agentState: connect.AgentState;
@@ -20,7 +21,7 @@ connect.agent(agent => {
     agent.onOffline(agentCallback); // $ExpectType: void
     agent.onError(agentCallback); // $ExpectType: void
     agent.onAfterCallWork(agentCallback); // $ExpectType: void
-    agent.onMuteToggle(agentCallback); // $ExpectType: void
+    agent.onMuteToggle(muteCallback); // $ExpectType: void
     agent.getState(); // $ExpectType: AgentState
     agent.getStateDuration(); // $ExpectType: number
     agent.getContacts(""); // $ExpectType: connect.Contact[]
diff --git a/types/amazon-connect-streams/index.d.ts b/types/amazon-connect-streams/index.d.ts
index 73215ab6d5..23ee2bbccc 100644
--- a/types/amazon-connect-streams/index.d.ts
+++ b/types/amazon-connect-streams/index.d.ts
@@ -13,6 +13,15 @@ declare namespace connect {
      */
     type AgentCallback = (agent: Agent) => void;
 
+    /**
+     *
+     * A callback to receive agent details
+     *
+     * @param agent An Agent object containing information about the currently
+     * signed-in agent.
+     */
+    type MuteCallback = (muteState: MuteState) => void;
+
     /**
      * Register a callback to receive agent details
      *
@@ -223,6 +232,10 @@ declare namespace connect {
        queueARN?: string;
     }
 
+    interface MuteState {
+        muted: boolean;
+    }
+
     interface Agent {
         /**
          * Subscribe a method to be called whenever Contact information is about to be updated.
@@ -273,7 +286,7 @@ declare namespace connect {
          *
          * @param callback A callback to receive updates on agent mute state
          */
-        onMuteToggle(callback: AgentCallback): void;
+        onMuteToggle(callback: MuteCallback): void;
 
         /**
          * Get the agent's current AgentState object indicating their availability state type.