diff --git a/plexpy/common.py b/plexpy/common.py
index 50dc6f37..3500efc8 100644
--- a/plexpy/common.py
+++ b/plexpy/common.py
@@ -520,8 +520,8 @@ NEWSLETTER_PARAMETERS = [
         'parameters': [
             {'name': 'Server Name', 'type': 'str', 'value': 'server_name', 'description': 'The name of your Plex Server.'},
             {'name': 'Start Date', 'type': 'str', 'value': 'start_date', 'description': 'The start date of the newesletter.'},
-            {'name': 'Week Number', 'type': 'int', 'value': 'week_number', 'description': 'The week number of current week.'},
             {'name': 'End Date', 'type': 'str', 'value': 'end_date', 'description': 'The end date of the newesletter.'},
+            {'name': 'Week Number', 'type': 'int', 'value': 'week_number', 'description': 'The week number of current week.'},
             {'name': 'Newsletter Days', 'type': 'int', 'value': 'newsletter_days', 'description': 'The past number of days included in the newsletter.'},
             {'name': 'Newsletter URL', 'type': 'str', 'value': 'newsletter_url', 'description': 'The self-hosted URL to the newsletter.'},
             {'name': 'Newsletter UUID', 'type': 'str', 'value': 'newsletter_uuid', 'description': 'The unique identifier for the newsletter.'},
diff --git a/plexpy/newsletters.py b/plexpy/newsletters.py
index 94cad245..f4071311 100644
--- a/plexpy/newsletters.py
+++ b/plexpy/newsletters.py
@@ -308,14 +308,13 @@ class Newsletter(object):
     _TEMPLATE_MASTER = ''
     _TEMPLATE = ''
 
-    def __init__(self, config=None, email_config=None, start_date=None, week_number=None, end_date=None,
+    def __init__(self, config=None, email_config=None, start_date=None, end_date=None,
                  subject=None, body=None, message=None):
         self.config = self.set_config(config=config, default=self._DEFAULT_CONFIG)
         self.email_config = self.set_config(config=email_config, default=self._DEFAULT_EMAIL_CONFIG)
         self.uuid = generate_newsletter_uuid()
 
         self.start_date = None
-        self.week_number = None
         self.end_date = None
 
         if end_date:
@@ -333,9 +332,6 @@ class Newsletter(object):
             except ValueError:
                 pass
 
-        if week_number is None:
-            self.week_number = arrow.now().isocalendar()[1]
-
         if self.start_date is None:
             self.start_date = self.end_date.shift(days=-self.config['last_days']+1).floor('day')
 
@@ -481,7 +477,7 @@ class Newsletter(object):
             'server_name': plexpy.CONFIG.PMS_NAME,
             'start_date': self.start_date.format(date_format),
             'end_date': self.end_date.format(date_format),
-            'week_number': self.week_number,
+            'week_number': self.start_date.isocalendar()[1],
             'newsletter_days': self.config['last_days'],
             'newsletter_url': base_url.rstrip('/') + plexpy.HTTP_ROOT + 'newsletter/' + self.uuid,
             'newsletter_uuid': self.uuid