diff --git a/models/CustomBase.py b/models/CustomBase.py
index 16bbe3c..e655333 100644
--- a/models/CustomBase.py
+++ b/models/CustomBase.py
@@ -6,3 +6,4 @@ class CustomBase:
     update_time = Column(
         DateTime(timezone=True), server_default=func.now(), onupdate=func.now()
     )
+    deleted_at = Column(DateTime(timezone=True), nullable=True)
\ No newline at end of file