diff --git a/BookerTrans/__init__.py b/BookerTrans/__init__.py
index dcf89ff59db28c6aeba7261d6639cec9398b2db3..059e9e44ebb1a63146cef5e6a03819f60b0998c4 100644
--- a/BookerTrans/__init__.py
+++ b/BookerTrans/__init__.py
@@ -10,7 +10,7 @@ from . import config
 __author__ = "ApacheCN"
 __email__ = "apachecn@163.com"
 __license__ = "SATA"
-__version__ = "2020.04.29"
+__version__ = "2020.04.29.1"
 
 RE_CODE = r'<(pre|code)[^>]*?>[\s\S]*?</\1>'
 RE_TAG = r'<[^>]*?>'
diff --git a/BookerTrans/__main__.py b/BookerTrans/__main__.py
index e196d9dfeb2064271e88257cf022518e60d91660..8c2cf06d600797581072e7a4ce6effb1b11a4ced 100644
--- a/BookerTrans/__main__.py
+++ b/BookerTrans/__main__.py
@@ -1,5 +1,6 @@
 # coding: utf-8
 
+import os
 from os import path
 from argparse import ArgumentParser
 from . import trans_html, config, api, __version__
@@ -29,6 +30,7 @@ def main():
     parser.add_argument('-v', '--version', action="version", version=__version__)
     parser.add_argument('-H', '--host', default='translate.google.cn', help="host for google translator")
     parser.add_argument('-P', '--proxy', help=f'proxy with format \d+\.\d+\.\d+\.\d+:\d+ or empty')
+    parser.add_argument('-t', '--timeout', type=float, help=f'timeout in second')
     parser.add_argument('-w', '--wait-sec', type=float, default=0.5, help='delay in second between two times of translation')
     parser.add_argument('-r', '--retry', type=int, default=10, help='count of retrying')
     parser.add_argument('-s', '--src', default='auto', help='src language')
@@ -40,6 +42,7 @@ def main():
         args.proxy = {'http': p, 'https': p}
     api.host = args.host
     api.proxy = args.proxy
+    api.timeout = args.timeout
     config.wait_sec = args.wait_sec
     config.retry = args.retry
     config.src = args.src
diff --git a/BookerTrans/api.py b/BookerTrans/api.py
index 81d3a022ac57deae805aaf93f6ea9dfe80497aff..91d9177cf989acbb06faa012230bf737ad8ef838 100644
--- a/BookerTrans/api.py
+++ b/BookerTrans/api.py
@@ -16,6 +16,7 @@ class GoTransApi:
         self.tkk = None
         self.host = 'translate.google.cn'
         self.proxy = None
+        self.timeout = 8
     
     @staticmethod
     def _shr32(x, bits):
@@ -111,7 +112,8 @@ class GoTransApi:
             res = requests.get(
                 f'https://{self.host}/', 
                 headers=GoTransApi.headers, 
-                proxies=self.proxy
+                proxies=self.proxy,
+                timeout=self.timeout,
             ).text
             self.tkk = re.search(r"tkk:'(\d+\.\d+)", res).group(1)
         return self.tkk
@@ -125,7 +127,8 @@ class GoTransApi:
         res = requests.get(
             url, 
             headers=GoTransApi.headers, 
-            proxies=self.proxy
+            proxies=self.proxy,
+            timeout=self.timeout,
         ).text
         j = json.loads(res)
         trans = ' '.join([o[0] for o in j[0]])
diff --git a/README.md b/README.md
index d02cbf3d2b9b9149422b294265970dba9e277d79..44db947653023340ee27165da3bf1641edfd2912 100644
--- a/README.md
+++ b/README.md
@@ -19,12 +19,13 @@ pip install git+https://github.com/apachecn/BookerTrans
 ## 使用说明
 
 ```
-btrans [-h] [-v] [-H HOST] [-P PROXY] [-w WAIT_SEC] [-r RETRY]
-       [-s SRC] [-d DST]
+btrans [-h] [-v] [-H HOST] [-P PROXY] [-t TIMEOUT] [-w WAIT_SEC] 
+       [-r RETRY] [-s SRC] [-d DST]
        fname
        
 -H HOST: 域名，默认为 translate.google.com
 -P PROXY: 代理，格式为 \d+\.\d+\.\d+\.\d+:\d+，默认为空
+-t TIMEOUT: 超时时间，以秒为单位，默认为 8
 -w WAIT_SEC: 两次翻译之间的延迟（以秒为单位），默认为 0.5
 -r RETRY: 重试次数，默认为 10
 -s SRC: 源语言，默认为 auto
diff --git a/history.md b/history.md
new file mode 100644
index 0000000000000000000000000000000000000000..d822d16ab539e38f4ec1a9d07c123b5d30a889c1
--- /dev/null
+++ b/history.md
@@ -0,0 +1,5 @@
+# 历史记录
+
+v2020.4.29
+
++   建立项目
\ No newline at end of file