diff --git a/ippisite/ippidb/migrations/0020_contribution.py b/ippisite/ippidb/migrations/0020_contribution.py
new file mode 100644
index 0000000000000000000000000000000000000000..d201140d1dd43cf0e97a7e9710eb0798eb1fbbaf
--- /dev/null
+++ b/ippisite/ippidb/migrations/0020_contribution.py
@@ -0,0 +1,27 @@
+# Generated by Django 2.0.13 on 2019-03-12 14:18
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('ippidb', '0019_auto_20190312_1023'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Contribution',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('bibliography', models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, to='ippidb.Bibliography')),
+                ('contributor', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, to=settings.AUTH_USER_MODEL)),
+                ('ppi', models.ForeignKey(null=True, on_delete=django.db.models.deletion.SET_NULL, to='ippidb.Ppi')),
+            ],
+        ),
+    ]