diff --git a/journal/migrations/0020_shelflogentry_unique_shelf_log_entry.py b/journal/migrations/0020_shelflogentry_unique_shelf_log_entry.py
new file mode 100644
index 00000000..ecd7ab99
--- /dev/null
+++ b/journal/migrations/0020_shelflogentry_unique_shelf_log_entry.py
@@ -0,0 +1,20 @@
+# Generated by Django 4.2.7 on 2023-11-23 03:23
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("journal", "0019_alter_collection_edited_time_and_more"),
+    ]
+
+    operations = [
+        migrations.AddConstraint(
+            model_name="shelflogentry",
+            constraint=models.UniqueConstraint(
+                fields=("owner", "item", "timestamp", "shelf_type"),
+                name="unique_shelf_log_entry",
+            ),
+        ),
+    ]