diff --git a/documentcloud/addons/migrations/0033_remove_addonrun_addonrun_user_id_idx_and_more.py b/documentcloud/addons/migrations/0033_remove_addonrun_addonrun_user_id_idx_and_more.py
new file mode 100644
index 00000000..37f47642
--- /dev/null
+++ b/documentcloud/addons/migrations/0033_remove_addonrun_addonrun_user_id_idx_and_more.py
@@ -0,0 +1,25 @@
+# Generated by Django 5.2.15 on 2026-09-22 14:28
+
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("addons", "0032_addonrun_addonrun_user_id_idx"),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.RemoveIndex(
+            model_name="addonrun",
+            name="addonrun_user_id_idx",
+        ),
+        migrations.AddIndex(
+            model_name="addonrun",
+            index=models.Index(
+                fields=["user", "-created_at"], name="addonrun_user_created_idx"
+            ),
+        ),
+    ]
diff --git a/documentcloud/addons/models.py b/documentcloud/addons/models.py
index 59b7db02..97ee3e3c 100644
--- a/documentcloud/addons/models.py
+++ b/documentcloud/addons/models.py
@@ -413,7 +413,11 @@ class AddOnRun(models.Model):
 
     class Meta:
         indexes = [
-            models.Index(fields=["user", "-id"], name="addonrun_user_id_idx"),
+            # CursorPagination defaults to pk, but the AddOnRunViewSet
+            # actually overrides to use -created_at.
+            models.Index(
+                fields=["user", "-created_at"], name="addonrun_user_created_idx"
+            ),
         ]
 
     def __str__(self):