diff --git a/mastodon/migrations/0004_alter_mastodonapplication_api_domain_and_more.py b/mastodon/migrations/0004_alter_mastodonapplication_api_domain_and_more.py
new file mode 100644
index 00000000..ee2b7e04
--- /dev/null
+++ b/mastodon/migrations/0004_alter_mastodonapplication_api_domain_and_more.py
@@ -0,0 +1,48 @@
+# Generated by Django 4.2.9 on 2024-01-14 18:13
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("mastodon", "0003_mastodonapplication_reachable"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="mastodonapplication",
+            name="api_domain",
+            field=models.CharField(
+                blank=True, max_length=200, verbose_name="domain for api call"
+            ),
+        ),
+        migrations.AlterField(
+            model_name="mastodonapplication",
+            name="app_id",
+            field=models.CharField(max_length=200, verbose_name="in-site app id"),
+        ),
+        migrations.AlterField(
+            model_name="mastodonapplication",
+            name="client_id",
+            field=models.CharField(max_length=200, verbose_name="client id"),
+        ),
+        migrations.AlterField(
+            model_name="mastodonapplication",
+            name="client_secret",
+            field=models.CharField(max_length=200, verbose_name="client secret"),
+        ),
+        migrations.AlterField(
+            model_name="mastodonapplication",
+            name="domain_name",
+            field=models.CharField(
+                max_length=200, unique=True, verbose_name="site domain name"
+            ),
+        ),
+        migrations.AlterField(
+            model_name="mastodonapplication",
+            name="server_version",
+            field=models.CharField(
+                blank=True, max_length=200, verbose_name="type and verion"
+            ),
+        ),
+    ]
diff --git a/mastodon/models.py b/mastodon/models.py
index e59018ac..a0e5928a 100644
--- a/mastodon/models.py
+++ b/mastodon/models.py
@@ -4,12 +4,12 @@ from django.utils.translation import gettext_lazy as _
 
 
 class MastodonApplication(models.Model):
-    domain_name = models.CharField(_("site domain name"), max_length=100, unique=True)
-    api_domain = models.CharField(_("domain for api call"), max_length=100, blank=True)
-    server_version = models.CharField(_("type and verion"), max_length=100, blank=True)
-    app_id = models.CharField(_("in-site app id"), max_length=100)
-    client_id = models.CharField(_("client id"), max_length=100)
-    client_secret = models.CharField(_("client secret"), max_length=100)
+    domain_name = models.CharField(_("site domain name"), max_length=200, unique=True)
+    api_domain = models.CharField(_("domain for api call"), max_length=200, blank=True)
+    server_version = models.CharField(_("type and verion"), max_length=200, blank=True)
+    app_id = models.CharField(_("in-site app id"), max_length=200)
+    client_id = models.CharField(_("client id"), max_length=200)
+    client_secret = models.CharField(_("client secret"), max_length=200)
     vapid_key = models.CharField(_("vapid key"), max_length=200, null=True, blank=True)
     star_mode = models.PositiveIntegerField(
         _("0: custom emoji; 1: unicode moon; 2: text"), blank=False, default=0
@@ -22,9 +22,6 @@ class MastodonApplication(models.Model):
     is_proxy = models.BooleanField(default=False, blank=True)
     proxy_to = models.CharField(max_length=100, blank=True, default="")
 
-    # website
-    # name
-    # redirect_uris
     def __str__(self):
         return self.domain_name