ciclos

diff --git a/src/alembic/versions/d6a05e473bc9_add_reserved_to_balances.py b/src/alembic/versions/d6a05e473bc9_add_reserved_to_balances.py
new file mode 100644
index 0000000000000000000000000000000000000000..5f3a1623e29df41d8f52791bbbfcba1bccefb34e
--- /dev/null
+++ b/src/alembic/versions/d6a05e473bc9_add_reserved_to_balances.py
@@ -0,0 +1,28 @@
+"""add reserved to balances
+
+Revision ID: d6a05e473bc9
+Revises: 
+Create Date: 2019-12-03 22:08:20.571234
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy import Column
+from sqlalchemy.types import DECIMAL
+
+
+# revision identifiers, used by Alembic.
+revision = 'd6a05e473bc9'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.add_column('balances',
+        Column('reserved', DECIMAL(10, 2), nullable = False, default = 0)
+    )
+
+
+def downgrade():
+    op.drop_column('balances', 'reserved')