diff --git a/src/core/migrations/0152_alter_platformuser_display_name_and_more.py b/src/core/migrations/0152_alter_platformuser_display_name_and_more.py
new file mode 100644
index 0000000000000000000000000000000000000000..f52652c1b6120d0e4f79809472e19de962386128
--- /dev/null
+++ b/src/core/migrations/0152_alter_platformuser_display_name_and_more.py
@@ -0,0 +1,28 @@
+# Generated by Django 5.1.2 on 2024-10-28 15:30
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("core", "0151_conference_publication_date"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="platformuser",
+            name="display_name",
+            field=models.CharField(
+                blank=True,
+                help_text="PlatformUser__display_name__help",
+                max_length=150,
+                verbose_name="PlatformUser__display_name",
+            ),
+        ),
+        migrations.AlterField(
+            model_name="platformuser",
+            name="slug",
+            field=models.SlugField(max_length=150, unique=True),
+        ),
+    ]
diff --git a/src/core/models/users.py b/src/core/models/users.py
index e46cfcdffa6c61af0f14550fc8ea8b8f7a71d8d0..f8263791980d31867ced35af609c0f3a020a646c 100644
--- a/src/core/models/users.py
+++ b/src/core/models/users.py
@@ -100,8 +100,8 @@ class PlatformUser(AbstractUser):
     )
 
     uuid = models.UUIDField(default=uuid4, unique=True)
-    slug = models.SlugField(blank=False, unique=True)
-    display_name = models.CharField(max_length=100, blank=True, help_text=_('PlatformUser__display_name__help'), verbose_name=_('PlatformUser__display_name'))
+    slug = models.SlugField(blank=False, unique=True, max_length=150)
+    display_name = models.CharField(max_length=150, blank=True, help_text=_('PlatformUser__display_name__help'), verbose_name=_('PlatformUser__display_name'))
 
     # self portrayal
     show_name = models.BooleanField(null=True, help_text=_('PlatformUser__show_name__help'), verbose_name=_('PlatformUser__show_name'))