diff --git a/src/drc/datamodel/migrations/0064_bestandsdeel_lock.py b/src/drc/datamodel/migrations/0064_bestandsdeel_lock.py
new file mode 100644
index 00000000..eee71a02
--- /dev/null
+++ b/src/drc/datamodel/migrations/0064_bestandsdeel_lock.py
@@ -0,0 +1,18 @@
+# Generated by Django 3.2.13 on 2023-10-19 12:27
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('datamodel', '0063_enkelvoudiginformatieobject_trefwoorden'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='bestandsdeel',
+            name='lock',
+            field=models.CharField(blank=True, help_text='Hash string, which represents id of the lock of related informatieobject', max_length=255, null=True),
+        ),
+    ]
diff --git a/src/drc/datamodel/models/bestandsdeel.py b/src/drc/datamodel/models/bestandsdeel.py
index 5c038384..4c36cb19 100644
--- a/src/drc/datamodel/models/bestandsdeel.py
+++ b/src/drc/datamodel/models/bestandsdeel.py
@@ -28,6 +28,12 @@ class BestandsDeel(models.Model):
         blank=True,
         help_text=_("De (binaire) bestandsinhoud van dit specifieke bestandsdeel."),
     )
+    lock = models.CharField(
+        max_length=255,
+        null=True,
+        blank=True,
+        help_text=_("Hash string, which represents id of the lock of related informatieobject"),
+    )
 
     class Meta:
         verbose_name = "bestands deel"