diff --git a/olgram/migrations/models/3_20210917115559_update.sql b/olgram/migrations/models/3_20210917115559_update.sql
new file mode 100644
index 0000000..f5d22e0
--- /dev/null
+++ b/olgram/migrations/models/3_20210917115559_update.sql
@@ -0,0 +1,4 @@
+-- upgrade --
+ALTER TABLE "group_chat" ALTER COLUMN "name" TYPE VARCHAR(255) USING "name"::VARCHAR(255);
+-- downgrade --
+ALTER TABLE "group_chat" ALTER COLUMN "name" TYPE VARCHAR(50) USING "name"::VARCHAR(50);
diff --git a/olgram/models/models.py b/olgram/models/models.py
index b597ac9..92aa08e 100644
--- a/olgram/models/models.py
+++ b/olgram/models/models.py
@@ -42,7 +42,7 @@ class User(Model):
 class GroupChat(Model):
     id = fields.IntField(pk=True)
     chat_id = fields.BigIntField(index=True, unique=True)
-    name = fields.CharField(max_length=50)
+    name = fields.CharField(max_length=255)
 
     class Meta:
         table = 'group_chat'