diff --git a/alembic/versions/1e695b024786_.py b/alembic/versions/1e695b024786_.py
new file mode 100644
index 0000000..a2ce12a
--- /dev/null
+++ b/alembic/versions/1e695b024786_.py
@@ -0,0 +1,29 @@
+"""empty message
+
+Revision ID: 1e695b024786
+Revises: 21dc1dc045b8
+Create Date: 2025-01-20 11:36:14.692849
+
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision: str = "1e695b024786"
+down_revision: Union[str, None] = "21dc1dc045b8"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    with op.batch_alter_table("application", schema=None) as batch_op:
+        batch_op.add_column(sa.Column("retention_days", sa.Integer(), nullable=True))
+
+
+def downgrade() -> None:
+    with op.batch_alter_table("application", schema=None) as batch_op:
+        batch_op.drop_column("retention_days")
diff --git a/app/models/app.py b/app/models/app.py
index 45ccdab..ac8d2fa 100644
--- a/app/models/app.py
+++ b/app/models/app.py
@@ -1,6 +1,7 @@
 from creyPY.fastapi.models.base import Base
-from sqlalchemy import Column, String
+from sqlalchemy import Column, Integer, String
 
 
 class Application(Base):
     name = Column(String(512), nullable=False, unique=True)
+    retention_days = Column(Integer, nullable=True, default=30)
diff --git a/app/models/entry.py b/app/models/entry.py
index 25aeda4..9de8a26 100644
--- a/app/models/entry.py
+++ b/app/models/entry.py
@@ -1,9 +1,9 @@
-from creyPY.fastapi.models.base import Base
-from sqlalchemy import Column, String, ForeignKey, Enum, JSON
-from sqlalchemy.dialects.postgresql import UUID
-
 from enum import Enum as pyenum
 
+from creyPY.fastapi.models.base import Base
+from sqlalchemy import JSON, Column, Enum, ForeignKey, String
+from sqlalchemy.dialects.postgresql import UUID
+
 
 class TransactionType(pyenum):
     CREATE = "create"
diff --git a/app/schema/app.py b/app/schema/app.py
index 4bdb5c1..ccf41ca 100644
--- a/app/schema/app.py
+++ b/app/schema/app.py
@@ -1,8 +1,11 @@
+from pydantic.json_schema import SkipJsonSchema
+
 from app.schema.common import BaseSchemaModelIN, BaseSchemaModelOUT
 
 
 class AppIN(BaseSchemaModelIN):
     name: str
+    retention_days: int | SkipJsonSchema[None] = 30
 
 
 class AppOUT(BaseSchemaModelOUT, AppIN):