diff --git a/archivebox/core/apps.py b/archivebox/core/apps.py
index 26f78a8e..5182da05 100644
--- a/archivebox/core/apps.py
+++ b/archivebox/core/apps.py
@@ -3,3 +3,4 @@ from django.apps import AppConfig
 
 class CoreConfig(AppConfig):
     name = 'core'
+    default_auto_field = 'django.db.models.UUIDField'
diff --git a/archivebox/core/migrations/0020_auto_20210410_1031.py b/archivebox/core/migrations/0020_auto_20210410_1031.py
new file mode 100644
index 00000000..e75243c6
--- /dev/null
+++ b/archivebox/core/migrations/0020_auto_20210410_1031.py
@@ -0,0 +1,23 @@
+# Generated by Django 3.1.8 on 2021-04-10 10:31
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('core', '0019_auto_20210401_0654'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='archiveresult',
+            name='id',
+            field=models.AutoField(primary_key=True, serialize=False, verbose_name='ID'),
+        ),
+        migrations.AlterField(
+            model_name='tag',
+            name='id',
+            field=models.AutoField(primary_key=True, serialize=False, verbose_name='ID'),
+        ),
+    ]