diff --git a/uniticket/uni_ticket/migrations/0017_alter_ticketassignment_follow.py b/uniticket/uni_ticket/migrations/0017_alter_ticketassignment_follow.py
new file mode 100644
index 00000000..fea2341d
--- /dev/null
+++ b/uniticket/uni_ticket/migrations/0017_alter_ticketassignment_follow.py
@@ -0,0 +1,17 @@
+# Generated by Django 4.2.7 on 2023-11-09 01:45
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("uni_ticket", "0016_ticketassignment_uni_ticket__office__634a3f_idx"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="ticketassignment",
+            name="follow",
+            field=models.BooleanField(db_index=True, default=True),
+        ),
+    ]
diff --git a/uniticket/uni_ticket/models.py b/uniticket/uni_ticket/models.py
index b64496ea..9d5eab2c 100644
--- a/uniticket/uni_ticket/models.py
+++ b/uniticket/uni_ticket/models.py
@@ -1329,7 +1329,7 @@ class TicketAssignment(TimeStampedModel):
         blank=True,
         related_name="taken_by_operator",
     )
-    follow = models.BooleanField(default=True)
+    follow = models.BooleanField(default=True, db_index=True)
     readonly = models.BooleanField(default=False)
 
     class Meta: