diff --git a/tests/unit/twiml/test_voice_response.py b/tests/unit/twiml/test_voice_response.py
index 0ebd27ae25..ea80f4dda7 100644
--- a/tests/unit/twiml/test_voice_response.py
+++ b/tests/unit/twiml/test_voice_response.py
@@ -2,7 +2,7 @@
 from nose.tools import assert_equal
 from six import u
 from tests.unit.twiml import TwilioTest
-from twilio.twiml.voice_response import VoiceResponse, Dial, Gather
+from twilio.twiml.voice_response import VoiceResponse, Dial, Enqueue, Gather
 
 
 class TestResponse(TwilioTest):
@@ -349,6 +349,18 @@ def test_queue(self):
         )
 
 
+class TestEcho(TwilioTest):
+
+    def test_echo(self):
+        r = VoiceResponse()
+        r.echo()
+
+        assert_equal(
+            self.strip(r),
+            '<?xml version="1.0" encoding="UTF-8"?><Response><Echo /></Response>'
+        )
+
+
 class TestEnqueue(TwilioTest):
 
     def test_enqueue(self):
@@ -366,6 +378,30 @@ def test_enqueue(self):
             '<?xml version="1.0" encoding="UTF-8"?><Response><Enqueue action="act" method="GET" waitUrl="wait" waitUrlMethod="POST">TestEnqueueAttribute</Enqueue></Response>'
         )
 
+    def test_task_string(self):
+        e = Enqueue(None, workflowSid='123123123')
+        e.task('{"account_sid": "AC123123123"}')
+
+        r = VoiceResponse()
+        r.append(e)
+
+        assert_equal(
+            self.strip(r),
+            '<?xml version="1.0" encoding="UTF-8"?><Response><Enqueue workflowsid="123123123"><Task>{"account_sid": "AC123123123"}</Task></Enqueue></Response>'
+        )
+
+    def test_task_dict(self):
+        e = Enqueue(None, workflowSid='123123123')
+        e.task({"account_sid": "AC123123123"})
+
+        r = VoiceResponse()
+        r.append(e)
+
+        assert_equal(
+            self.strip(r),
+            '<?xml version="1.0" encoding="UTF-8"?><Response><Enqueue workflowsid="123123123"><Task>{"account_sid": "AC123123123"}</Task></Enqueue></Response>'
+        )
+
 
 class TestDial(TwilioTest):
 
@@ -379,6 +415,18 @@ def test_dial(self):
             '<?xml version="1.0" encoding="UTF-8"?><Response><Dial>1231231234</Dial></Response>'
         )
 
+    def test_sim(self):
+        d = Dial()
+        d.sim('123123123')
+
+        r = VoiceResponse()
+        r.append(d)
+
+        assert_equal(
+            self.strip(r),
+            '<?xml version="1.0" encoding="UTF-8"?><Response><Dial><Sim>123123123</Sim></Dial></Response>'
+        )
+
     def test_sip(self):
         """ should redirect the call """
         d = Dial()
diff --git a/twilio/twiml/voice_response.py b/twilio/twiml/voice_response.py
index 363920fe1f..41718e96ea 100644
--- a/twilio/twiml/voice_response.py
+++ b/twilio/twiml/voice_response.py
@@ -1,3 +1,5 @@
+import json
+
 from twilio.twiml import TwiML
 
 
@@ -57,6 +59,15 @@ def dial(self,
             **kwargs
         ))
 
+    def echo(self,
+             **kwargs):
+        """
+        Add a new <Echo> element
+        """
+        return self.append(Echo(
+            **kwargs
+        ))
+
     def enqueue(self,
                 name,
                 action=None,
@@ -444,6 +455,19 @@ def queue(self,
             **kwargs
         ))
 
+    def sim(self,
+            sid,
+            **kwargs):
+        """
+        Add a <Sim> element
+
+        :param sid: sim sid
+        """
+        return self.append(Sim(
+            sid,
+            **kwargs
+        ))
+
     def sip(self,
             uri,
             username=None,
@@ -541,6 +565,20 @@ def __init__(self, queue_name, **kwargs):
         self.value = queue_name
 
 
+class Sim(TwiML):
+    """
+    <Sim> element
+    """
+    def __init__(self, sid, **kwargs):
+        """
+        Create a new <Sim> element
+
+        :param sid: sim sid
+        """
+        super(Sim, self).__init__(**kwargs)
+        self.value = sid
+
+
 class Sip(TwiML):
     """
     <Sip> element
@@ -556,6 +594,17 @@ def __init__(self, uri, **kwargs):
         self.value = uri
 
 
+class Echo(TwiML):
+    """
+    <Echo> element
+    """
+    def __init__(self, **kwargs):
+        """
+        Create a new <Echo> element
+        """
+        super(Echo, self).__init__(**kwargs)
+
+
 class Enqueue(TwiML):
     """
     <Enqueue> element
@@ -570,6 +619,32 @@ def __init__(self, name, **kwargs):
         super(Enqueue, self).__init__(**kwargs)
         self.value = name
 
+    def task(self, attributes, **kwargs):
+        """
+        Add a <Task> element
+
+        :param attributes: Attributes for a task
+        :return: <Task> element
+        """
+        return self.append(Task(attributes, **kwargs))
+
+
+class Task(TwiML):
+    """
+    <Task> element
+    """
+    def __init__(self, attributes, **kwargs):
+        """
+        Create a new <Task> element
+
+        :param attributes: Attributes for a task
+        """
+        super(Task, self).__init__(**kwargs)
+        if isinstance(attributes, basestring):
+            self.value = attributes
+        else:
+            self.value = json.dumps(attributes)
+
 
 class Gather(TwiML):
     """