diff --git a/ayct_backend/twitter/models.py b/ayct_backend/twitter/models.py
index 8650611..88ce407 100644
--- a/ayct_backend/twitter/models.py
+++ b/ayct_backend/twitter/models.py
@@ -7,7 +7,7 @@ class TwitterAccount(twitter_db.Model):
     __tablename__ = 'twitter_account'
 
     account_id = twitter_db.Column(twitter_db.Integer, primary_key=True)
-    twitter_user_id = twitter_db.Column(twitter_db.String(16), unique=True, nullable=False)
+    twitter_user_id = twitter_db.Column(twitter_db.String(32), unique=True, nullable=False)
     username = twitter_db.Column(twitter_db.String(16), unique=True, nullable=False)
     access_token = twitter_db.Column(twitter_db.String(256), nullable=False)
     access_token_secret = twitter_db.Column(twitter_db.String(256), nullable=False)