diff --git a/server/users/migrations/0026_user_old_hep_id.py b/server/users/migrations/0026_user_old_hep_id.py
new file mode 100644
index 00000000..31c0225d
--- /dev/null
+++ b/server/users/migrations/0026_user_old_hep_id.py
@@ -0,0 +1,18 @@
+# Generated by Django 2.2.21 on 2021-05-06 12:28
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('users', '0025_auto_20210126_1343'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='user',
+            name='old_hep_id',
+            field=models.PositiveIntegerField(null=True),
+        ),
+    ]
diff --git a/server/users/migrations/0027_auto_20210506_1233.py b/server/users/migrations/0027_auto_20210506_1233.py
new file mode 100644
index 00000000..12608966
--- /dev/null
+++ b/server/users/migrations/0027_auto_20210506_1233.py
@@ -0,0 +1,27 @@
+# Generated by Django 2.2.21 on 2021-05-06 12:33
+from django.db import migrations
+
+
+def hep_id_to_old_hep_id(apps, schema_editor):
+    User = apps.get_model("users", "User")
+    for user in User.objects.all():
+        user.old_hep_id = user.hep_id
+        user.save()
+
+
+def old_hep_id_to_hep_id(apps, schema_editor):
+    User = apps.get_model("users", "User")
+    for user in User.objects.all():
+        user.hep_id = user.old_hep_id
+        user.save()
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('users', '0026_user_old_hep_id'),
+    ]
+
+    operations = [
+        migrations.RunPython(hep_id_to_old_hep_id, reverse_code=old_hep_id_to_hep_id)
+    ]
diff --git a/server/users/models.py b/server/users/models.py
index f0862006..71106430 100644
--- a/server/users/models.py
+++ b/server/users/models.py
@@ -26,6 +26,7 @@ class User(AbstractUser):
     avatar_url = models.CharField(max_length=254, blank=True, default='')
     email = models.EmailField(_('email address'), unique=True)
     hep_id = models.PositiveIntegerField(null=True, blank=False)
+    old_hep_id = models.PositiveIntegerField(null=True, blank=False)
     hep_group_id = models.PositiveIntegerField(null=True, blank=False)
     license_expiry_date = models.DateField(blank=False, null=True, default=None)
     onboarding_visited = models.BooleanField(default=False)