diff --git a/migrations/0057_alter_supporter_internal_notes.py b/migrations/0057_alter_supporter_internal_notes.py
new file mode 100644
index 0000000..5e7a96e
--- /dev/null
+++ b/migrations/0057_alter_supporter_internal_notes.py
@@ -0,0 +1,35 @@
+# Generated by Django 4.2.16 on 2024-11-13 16:21
+
+import core.model_utils
+from django.db import migrations
+from django.template.defaultfilters import linebreaksbr
+
+
+def linebreaks_to_brs_in_internal_notes(apps, schema_editor):
+    Supporter = apps.get_model('consortial_billing', 'Supporter')
+    for supporter in Supporter.objects.all():
+        new_notes = linebreaksbr(supporter.internal_notes)
+        supporter.internal_notes = new_notes
+        supporter.save()
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('consortial_billing', '0056_remove_supporter_country'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='supporter',
+            name='internal_notes',
+            field=core.model_utils.JanewayBleachField(
+                blank=True,
+                help_text='Internal notes on this supporter',
+            ),
+        ),
+        migrations.RunPython(
+            linebreaks_to_brs_in_internal_notes,
+            reverse_code=migrations.RunPython.noop,
+        )
+    ]
diff --git a/models.py b/models.py
index 33353ca..cfe3562 100755
--- a/models.py
+++ b/models.py
@@ -15,6 +15,7 @@
 
 from plugins.consortial_billing import utils, logic, plugin_settings
 
+from core.model_utils import JanewayBleachField
 from utils.logger import get_logger
 logger = get_logger(__name__)
 
@@ -508,8 +509,7 @@ class Supporter(models.Model):
         help_text="Whether the supporter is active",
     )
 
-    internal_notes = models.TextField(
-        max_length=500,
+    internal_notes = JanewayBleachField(
         blank=True,
         help_text="Internal notes on this supporter",
     )
diff --git a/templates/consortial_billing/supporter_list_item.html b/templates/consortial_billing/supporter_list_item.html
index 9791743..a70fb42 100644
--- a/templates/consortial_billing/supporter_list_item.html
+++ b/templates/consortial_billing/supporter_list_item.html
@@ -47,7 +47,9 @@ <h3>
       {% endif %}
       <details>
         <summary>Internal notes</summary>
-        <p>{{ supporter.internal_notes|linebreaks }}</p>
+        <div>
+          {{ supporter.internal_notes|safe }}
+        </div>
       </details>
     </div>
     <div class="actions">