diff --git a/dj_backend_server/web/migrations/0002_remove_pdfdatasource_chatbot_id_and_more.py b/dj_backend_server/web/migrations/0002_remove_pdfdatasource_chatbot_id_and_more.py
new file mode 100644
index 00000000..c2c22fda
--- /dev/null
+++ b/dj_backend_server/web/migrations/0002_remove_pdfdatasource_chatbot_id_and_more.py
@@ -0,0 +1,23 @@
+# Generated by Django 4.2.3 on 2023-10-20 16:59
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('web', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='pdfdatasource',
+            name='chatbot_id',
+        ),
+        migrations.AddField(
+            model_name='pdfdatasource',
+            name='chatbot',
+            field=models.ForeignKey(db_column='chatbot_id', null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='pdf_data_sources', to='web.chatbot'),
+        ),
+    ]
diff --git a/dj_backend_server/web/migrations/0003_alter_pdfdatasource_id.py b/dj_backend_server/web/migrations/0003_alter_pdfdatasource_id.py
new file mode 100644
index 00000000..8c5a7135
--- /dev/null
+++ b/dj_backend_server/web/migrations/0003_alter_pdfdatasource_id.py
@@ -0,0 +1,18 @@
+# Generated by Django 4.2.3 on 2023-10-20 19:34
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('web', '0002_remove_pdfdatasource_chatbot_id_and_more'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='pdfdatasource',
+            name='id',
+            field=models.AutoField(primary_key=True, serialize=False),
+        ),
+    ]
diff --git a/dj_backend_server/web/models/pdf_data_sources.py b/dj_backend_server/web/models/pdf_data_sources.py
index d40d0ad0..fd417253 100644
--- a/dj_backend_server/web/models/pdf_data_sources.py
+++ b/dj_backend_server/web/models/pdf_data_sources.py
@@ -3,9 +3,10 @@
 import uuid
 
 class PdfDataSource(models.Model):
-    id = models.CharField(max_length=36, primary_key=True)
-    #chatbot = models.ForeignKey(Chatbot, related_name='pdf_data_sources', db_column='chatbot_id', on_delete=models.SET_NULL, null=True)
-    chatbot_id = models.CharField(max_length=36, null=True)
+    #id = models.CharField(max_length=36, primary_key=True)
+    id = models.AutoField(primary_key=True)
+    chatbot = models.ForeignKey(Chatbot, related_name='pdf_data_sources', db_column='chatbot_id', on_delete=models.SET_NULL, null=True)
+    #chatbot_id = models.CharField(max_length=36, null=True)
     files = models.JSONField()
     folder_name = models.CharField(max_length=255, null=True)
     created_at = models.DateTimeField(auto_now_add=True, null=True)