diff --git a/src/zai/api_resource/audio/audio.py b/src/zai/api_resource/audio/audio.py
index 92fe520..2de7b47 100644
--- a/src/zai/api_resource/audio/audio.py
+++ b/src/zai/api_resource/audio/audio.py
@@ -3,6 +3,7 @@
 from typing import TYPE_CHECKING, Mapping, Optional, cast
 
 import httpx
+from httpx import stream
 
 from zai.core import (
 	NOT_GIVEN,
@@ -55,8 +56,10 @@ def speech(
 		extra_headers: Headers | None = None,
 		extra_body: Body | None = None,
 		timeout: float | httpx.Timeout | None | NotGiven = NOT_GIVEN,
+		encode_format: str = None,
 		speed: float | None = 1.0,
 		volume: float | None = 1.0,
+		stream: bool | None = False
 	) -> HttpxBinaryResponseContent:
 		"""
 		Generate speech audio from text input
@@ -79,11 +82,13 @@ def speech(
 				'input': input,
 				'voice': voice,
 				'response_format': response_format,
+				'encode_format': encode_format,
 				'sensitive_word_check': sensitive_word_check,
 				'request_id': request_id,
 				'user_id': user_id,
 				'speed': speed,
 				'volume': volume,
+				'stream': stream
 			}
 		)
 		return self._post(
diff --git a/tests/integration_tests/test_audio.py b/tests/integration_tests/test_audio.py
index 420f19b..e9ef33c 100644
--- a/tests/integration_tests/test_audio.py
+++ b/tests/integration_tests/test_audio.py
@@ -16,7 +16,8 @@ def test_audio_speech(logging_conf):
 			input='Hello, welcome to Z.ai Open Platform',
 			voice='female',
 			response_format='pcm',
-			encode_format='hex',
+			encode_format='base64',
+			stream=False,
 			speed=1.0,
 			volume=1.0,
 		)