diff --git a/src/OpenTok/OpenTok.php b/src/OpenTok/OpenTok.php
index a33e394..c061249 100644
--- a/src/OpenTok/OpenTok.php
+++ b/src/OpenTok/OpenTok.php
@@ -1140,7 +1140,8 @@ public function dial($sessionId, $token, $sipUri, $options = [])
             'secure' => true,
             'from' => null,
             'video' => false,
-            'observeForceMute' => false
+            'observeForceMute' => false,
+            'streams' => null
         );
 
         $options = array_merge($defaults, array_intersect_key($options, $defaults));
diff --git a/src/OpenTok/Util/Client.php b/src/OpenTok/Util/Client.php
index 76606ec..9771b33 100755
--- a/src/OpenTok/Util/Client.php
+++ b/src/OpenTok/Util/Client.php
@@ -690,7 +690,7 @@ public function setStreamClassLists($sessionId, $payload)
      * @param string $sessionId
      * @param string $token
      * @param string $sipUri
-     * @param array{secure: bool, headers?: array<string, string>, auth?: array{username: string, password: string}, from?: string, video?: boolean} $options
+     * @param array{secure: bool, headers?: array<string, string>, auth?: array{username: string, password: string}, from?: string, video?: boolean, streams?: array} $options
      * @return array{id: string, streamId: string, connectId: string}
      * @throws AuthenticationException
      * @throws DomainException
@@ -726,6 +726,10 @@ public function dial($sessionId, $token, $sipUri, $options)
             $body['sip']['video'] = (bool) $options['video'];
         }
 
+        if (array_key_exists('streams', $options)) {
+            $body['sip']['streams'] = $options['streams'];
+        }
+
         // set up the request
         $request = new Request('POST', '/v2/project/' . $this->apiKey . '/call');
 
diff --git a/tests/OpenTokTest/OpenTokTest.php b/tests/OpenTokTest/OpenTokTest.php
index 4dbacfe..00bb622 100644
--- a/tests/OpenTokTest/OpenTokTest.php
+++ b/tests/OpenTokTest/OpenTokTest.php
@@ -2402,6 +2402,40 @@ public function testSipCallVideo(): void
         $this->assertEquals(true, $body->sip->video);
     }
 
+    public function testSipCallStreams(): void
+    {
+        $this->setupOTWithMocks([[
+            'code' => 200,
+            'headers' => [
+                'Content-Type' => 'application/json'
+            ],
+            'path' => 'v2/project/APIKEY/dial'
+        ]]);
+
+        $sessionId = '1_MX4xMjM0NTY3OH4-VGh1IEZlYiAyNyAwNDozODozMSBQU1QgMjAxNH4wLjI0NDgyMjI';
+        $bogusToken = 'T1==TEST';
+        $bogusSipUri = 'sip:john@doe.com';
+
+        $options = [
+            'video' => true,
+            'streams' => ['stream1', 'stream2']
+        ];
+
+        $sipCall = $this->opentok->dial($sessionId, $bogusToken, $bogusSipUri, $options);
+
+        $this->assertInstanceOf('OpenTok\SipCall', $sipCall);
+        $this->assertNotNull($sipCall->id);
+        $this->assertNotNull($sipCall->connectionId);
+        $this->assertNotNull($sipCall->streamId);
+
+        $this->assertCount(1, $this->historyContainer);
+        $request = $this->historyContainer[0]['request'];
+
+        $body = json_decode($request->getBody());
+        $this->assertEquals(true, $body->sip->video);
+        $this->assertEquals('stream1', $body->sip->streams[0]);
+    }
+
     public function testSipCallVideoWithObserveForceMute(): void
     {
         $this->setupOTWithMocks([[