diff --git a/src/Bandwidth.Standard.Test/Unit/Model/Bxml/TestStartStream.cs b/src/Bandwidth.Standard.Test/Unit/Model/Bxml/TestStartStream.cs
index 4252da01..b73f5300 100644
--- a/src/Bandwidth.Standard.Test/Unit/Model/Bxml/TestStartStream.cs
+++ b/src/Bandwidth.Standard.Test/Unit/Model/Bxml/TestStartStream.cs
@@ -11,7 +11,7 @@ public class TestStartStream
 		[Fact]
 		public void StartStreamTest()
 		{
-			var expected = "<?xml version=\"1.0\" encoding=\"utf-8\"?><Response>  <StartStream name=\"test\" tracks=\"inbound\" destination=\"wss://test.url/\" streamEventUrl=\"https://test.url/\" streamEventMethod=\"POST\" username=\"username\" password=\"password\">    <StreamParam name=\"testName\" value=\"testValue\" />  </StartStream></Response>";
+			var expected = "<?xml version=\"1.0\" encoding=\"utf-8\"?><Response>  <StartStream name=\"test\" mode=\"unidirectional\" tracks=\"inbound\" destination=\"wss://test.url/\" streamEventUrl=\"https://test.url/\" streamEventMethod=\"POST\" username=\"username\" password=\"password\">    <StreamParam name=\"testName\" value=\"testValue\" />  </StartStream></Response>";
 
 			var streamParam = new StreamParam();
 			streamParam.Name = "testName";
@@ -19,6 +19,7 @@ public void StartStreamTest()
 
 			var startStream = new StartStream();
 			startStream.Name = "test";
+			startStream.Mode = "unidirectional";
 			startStream.Tracks = "inbound";
 			startStream.Destination = "wss://test.url/";
 			startStream.StreamEventUrl = "https://test.url/";
diff --git a/src/Bandwidth.Standard/Model/Bxml/Verbs/StartStream.cs b/src/Bandwidth.Standard/Model/Bxml/Verbs/StartStream.cs
index 0f29a008..627f03d0 100644
--- a/src/Bandwidth.Standard/Model/Bxml/Verbs/StartStream.cs
+++ b/src/Bandwidth.Standard/Model/Bxml/Verbs/StartStream.cs
@@ -24,6 +24,12 @@ public StartStream()
         [XmlAttribute("name")]
         public string Name { get; set; }
 
+        /// <summary>
+        /// The mode to use for the stream. unidirectional or bidirectional. Default is unidirectional.
+        /// </summary>
+        [XmlAttribute("mode")]
+        public string Mode { get; set; }
+
         /// <summary>
         /// The part of the call to send a stream from.
         /// </summary>