diff --git a/README.md b/README.md
index 1a26110..4558222 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 [![PyPI version](https://img.shields.io/pypi/v/qos-api)](https://pypi.org/project/qos-api/)
 [![Python versions](https://img.shields.io/pypi/pyversions/qos-api)](https://pypi.org/project/qos-api/)
 
-官方Python SDK for [QOS行情API](https://qos.hk)，支持港股、美股、A股和加密货币的实时行情数据。
+官方Python SDK for [QOS行情API](https://qos.hk)，支持港股、美股、A股和加密货币的实时行情数据,K线数据，历史K线数据，直接提供了港股API,美股API,A股API,加密货币API。
 
 ## 功能特性
 
@@ -225,4 +225,4 @@ except QOSAPIError as e:
 
 ## License
 
-MIT
\ No newline at end of file
+MIT
diff --git a/qos_api/__init__.py b/qos_api/__init__.py
index ff50745..9b77692 100644
--- a/qos_api/__init__.py
+++ b/qos_api/__init__.py
@@ -15,7 +15,7 @@
     QOSLimitError
 )
 
-__version__ = "0.1.8"
+__version__ = "0.1.9"
 __all__ = [
     'QOSClient',
     'Market',
@@ -32,4 +32,4 @@
     'QOSHTTPError',
     'QOSWebSocketError',
     'QOSLimitError'
-]
\ No newline at end of file
+]
diff --git a/qos_api/constants.py b/qos_api/constants.py
index 4015e50..f9e8c1f 100644
--- a/qos_api/constants.py
+++ b/qos_api/constants.py
@@ -51,4 +51,4 @@ class WSType(Enum):
 
 BASE_URL = "https://api.qos.hk"
 WS_URL = "wss://api.qos.hk/ws"
-MAX_SUB_CODES = 10  # 默认最大订阅品种数
\ No newline at end of file
+MAX_SUB_CODES = 10000  # 默认最大订阅品种数
diff --git a/setup.py b/setup.py
index e999510..395d42e 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 
 setup(
     name="qos_api",
-    version="0.1.8",
+    version="0.1.9",
     packages=find_packages(),
     install_requires=[
         "requests>=2.25.0",
@@ -21,4 +21,4 @@
         "License :: OSI Approved :: MIT License",
         "Operating System :: OS Independent",
     ],
-)
\ No newline at end of file
+)