diff --git a/zerver/migrations/0094_realm_filter_url_validator.py b/zerver/migrations/0094_realm_filter_url_validator.py
index 18bf4bbc2c..d2923001ad 100644
--- a/zerver/migrations/0094_realm_filter_url_validator.py
+++ b/zerver/migrations/0094_realm_filter_url_validator.py
@@ -1,5 +1,4 @@
 # Generated by Django 1.11.2 on 2017-07-22 13:44
-import django.core.validators
 from django.db import migrations, models
 
 from zerver.models import filter_format_validator
@@ -15,8 +14,6 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name="realmfilter",
             name="url_format_string",
-            field=models.TextField(
-                validators=[django.core.validators.URLValidator(), filter_format_validator]
-            ),
+            field=models.TextField(validators=[filter_format_validator]),
         ),
     ]
diff --git a/zerver/migrations/0368_alter_realmfilter_url_format_string.py b/zerver/migrations/0368_alter_realmfilter_url_format_string.py
index 0ceed9c1e5..9f0bfa05c0 100644
--- a/zerver/migrations/0368_alter_realmfilter_url_format_string.py
+++ b/zerver/migrations/0368_alter_realmfilter_url_format_string.py
@@ -1,8 +1,8 @@
 # Generated by Django 3.2.8 on 2021-10-20 23:42
 
-from django.db import migrations, models
+from typing import List
 
-from zerver.models import filter_format_validator
+from django.db import migrations
 
 
 class Migration(migrations.Migration):
@@ -11,10 +11,4 @@ class Migration(migrations.Migration):
         ("zerver", "0367_scimclient"),
     ]
 
-    operations = [
-        migrations.AlterField(
-            model_name="realmfilter",
-            name="url_format_string",
-            field=models.TextField(validators=[filter_format_validator]),
-        ),
-    ]
+    operations: List[migrations.operations.base.Operation] = []