diff --git a/archivebox/machine/migrations/0001_initial.py b/archivebox/machine/migrations/0001_initial.py
index 48a17519..37c42fd0 100644
--- a/archivebox/machine/migrations/0001_initial.py
+++ b/archivebox/machine/migrations/0001_initial.py
@@ -201,8 +201,6 @@ class Migration(migrations.Migration):
                         ('id', models.UUIDField(default=uuid7, editable=False, primary_key=True, serialize=False, unique=True)),
                         ('created_at', models.DateTimeField(db_index=True, default=django.utils.timezone.now)),
                         ('modified_at', models.DateTimeField(auto_now=True)),
-                        ('num_uses_succeeded', models.PositiveIntegerField(default=0)),
-                        ('num_uses_failed', models.PositiveIntegerField(default=0)),
                         ('name', models.CharField(blank=True, db_index=True, default='', max_length=63)),
                         ('binproviders', models.CharField(blank=True, default='env', help_text='Comma-separated list of allowed providers: apt,brew,pip,npm,env', max_length=127)),
                         ('overrides', models.JSONField(blank=True, default=dict, help_text="Provider-specific overrides: {'apt': {'packages': ['pkg']}, ...}")),