diff --git a/gracedb/ligoauth/migrations/0055_update_detchar_cert.py b/gracedb/ligoauth/migrations/0055_update_detchar_cert.py
new file mode 100644
index 0000000000000000000000000000000000000000..e63bfa062676d2c201d77536c9a228bc48d23902
--- /dev/null
+++ b/gracedb/ligoauth/migrations/0055_update_detchar_cert.py
@@ -0,0 +1,44 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.20 on 2019-06-03 20:10
+from __future__ import unicode_literals
+
+from django.db import migrations
+
+# Note: the CN in the cert is for detchar-la, not detchar.
+
+ACCOUNT = {
+    'name': 'detchar',
+    'new_cert': '/DC=org/DC=cilogon/C=US/O=LIGO/OU=Robots/CN=detchar.ligo-la.caltech.edu/CN=detchar-la/CN=Alexander Urban/CN=UID:alexander.urban.robot',
+}
+
+
+def add_cert(apps, schema_editor):
+    RobotUser = apps.get_model('auth', 'User')
+
+    # Get user
+    user = RobotUser.objects.get(username=ACCOUNT['name'])
+
+    # Create new certificate
+    user.x509cert_set.create(subject=ACCOUNT['new_cert'])
+
+
+def delete_cert(apps, schema_editor):
+    RobotUser = apps.get_model('auth', 'User')
+
+    # Get user
+    user = RobotUser.objects.get(username=ACCOUNT['name'])
+
+    # Delete new certificate
+    cert = user.x509cert_set.get(subject=ACCOUNT['new_cert'])
+    cert.delete()
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('ligoauth', '0054_update_pycbclive_cert'),
+    ]
+
+    operations = [
+        migrations.RunPython(add_cert, delete_cert),
+    ]
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