diff --git a/main.py b/main.py
index 08df316..31feede 100644
--- a/main.py
+++ b/main.py
@@ -51,7 +51,7 @@ def main(driver: Chrome, logger = logging.getLogger('main')):
         RUNNING = 2
         STANDBY = 3
         CLOSING = 4
-    
+
     class ColumnMapping:
         def __init__(self, email=None, recipient=None, code=None, region=None, sent=None, variables=None):
             self.email = email or '邮箱'
@@ -60,7 +60,7 @@ def main(driver: Chrome, logger = logging.getLogger('main')):
             self.region = region or '国家地区'
             self.sent = sent or '已发送'
             self.variables = variables or '变量值'
-    
+
     status = Status.IDLE
     options = dict()
     headers = list()
@@ -89,7 +89,7 @@ def main(driver: Chrome, logger = logging.getLogger('main')):
         status = Status.RUNNING
         driver.switch_to.window(driver.current_window_handle)
         timer.start()
-    
+
     def unique(header: str):
         result = dict()
         col = headers.index(header) + 1
@@ -144,11 +144,11 @@ def main(driver: Chrome, logger = logging.getLogger('main')):
             if char.isdigit() or (category(char).startswith('L') and not name(char, '').startswith('LATIN')):
                 return True
         return False
-    
+
     def ready(driver: Chrome):
         busy = driver.find_element(By.CSS_SELECTOR, ".io-ox-busy")
         return busy
-    
+
     def catch(predicate: Callable[[Chrome], WebElement]):
         wait = WebDriverWait(driver, timeout=parameters['interval'])
         return wait.until(predicate, 'Timeout')
@@ -194,7 +194,7 @@ def main(driver: Chrome, logger = logging.getLogger('main')):
             return subject
         except:
             return None
-    
+
     def get_address():
         try:
             element = locate("header div.from", wait=False)
@@ -202,7 +202,7 @@ def main(driver: Chrome, logger = logging.getLogger('main')):
             return address
         except:
             return None
-    
+
     def cell(row: int, header: str):
         result = wb.active.cell(row, headers.index(header) + 1)
         return result
@@ -296,7 +296,7 @@ def main(driver: Chrome, logger = logging.getLogger('main')):
         for col in range(1, wb.active.max_column + 1):
             value = str(wb.active.cell(1, col).value)
             headers.append(value)
-        
+
         logger.info('Done')
         flow.allow(Cancel)
         status = Status.READY
diff --git a/requirements.txt b/requirements.txt
index c623624..0885c56 100644
Binary files a/requirements.txt and b/requirements.txt differ