diff --git a/cdoseaplay/update.py b/cdoseaplay/update.py
index 8a6a594..2948e98 100755
--- a/cdoseaplay/update.py
+++ b/cdoseaplay/update.py
@@ -53,9 +53,11 @@ def update_video(url, name):
     if folder and not os.path.exists(folder):
         os.makedirs(folder)
     if os.path.exists(name):
-        head = requests.head(url)
-        mtime = time.mktime(datetime.strptime(head.headers.get("Last-Modified"), "%a, %d %b %Y %X GMT").timetuple())
-        get = mtime > os.path.getmtime(name) or int(head.headers.get("Content-Length")) != os.path.getsize(name)
+        head = requests.head(url, allow_redirects=True)
+        modified = head.headers.get("Last-Modified")
+        if modified:
+            mtime = time.mktime(datetime.strptime(modified, "%a, %d %b %Y %X GMT").timetuple())
+            get = mtime > os.path.getmtime(name) or int(head.headers.get("Content-Length")) != os.path.getsize(name)
     else:
         get = True
     if get: