diff --git a/core/data/alembic/versions/63f1fc2e334c_drop_billing_playcount_unique_constraint.py b/core/data/alembic/versions/63f1fc2e334c_drop_billing_playcount_unique_constraint.py
new file mode 100644
index 0000000..fda1a6f
--- /dev/null
+++ b/core/data/alembic/versions/63f1fc2e334c_drop_billing_playcount_unique_constraint.py
@@ -0,0 +1,24 @@
+"""drop billing playcount unique constraint
+
+Revision ID: 63f1fc2e334c
+Revises: ada3e2d02483
+Create Date: 2026-07-03 18:01:52.160242
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '63f1fc2e334c'
+down_revision = 'ada3e2d02483'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.drop_constraint('machine', 'machine_billing_playcount', type_='unique')
+
+
+def downgrade():
+    op.create_unique_constraint('machine', 'machine_billing_playcount', ['machine'])
diff --git a/core/data/schema/arcade.py b/core/data/schema/arcade.py
index d587f71..f10f4cc 100644
--- a/core/data/schema/arcade.py
+++ b/core/data/schema/arcade.py
@@ -142,7 +142,7 @@ billing_playct: Table = Table(
         "machine",
         Integer,
         ForeignKey("machine.id", ondelete="cascade", onupdate="cascade"),
-        nullable=False, unique=True
+        nullable=False
     ),
     Column("game_id", CHAR(5), nullable=False),
     Column("year", INTEGER, nullable=False),