diff --git a/apps/logs/migrations/0035_reporttype_materialization_date.py b/apps/logs/migrations/0035_reporttype_materialization_date.py
new file mode 100644
index 00000000..bf590647
--- /dev/null
+++ b/apps/logs/migrations/0035_reporttype_materialization_date.py
@@ -0,0 +1,22 @@
+# Generated by Django 2.2.17 on 2021-03-04 09:52
+
+from django.db import migrations, models
+import django.utils.timezone
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('logs', '0034_importbatch_materialization_info'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='reporttype',
+            name='materialization_date',
+            field=models.DateTimeField(
+                default=django.utils.timezone.now,
+                help_text='All data materialized before this data will be recomputed - can be used to force recomputation',
+            ),
+        ),
+    ]