diff --git a/PythonProject/model/cla_model.py b/PythonProject/model/cla_model.py
index 3371f7e..2ba1346 100644
--- a/PythonProject/model/cla_model.py
+++ b/PythonProject/model/cla_model.py
@@ -1,5 +1,5 @@
 
-from sqlalchemy import DateTime,Date,Column,Integer,ForeignKey,Boolean,String
+from sqlalchemy import DateTime,Date,Column,Integer,ForeignKey,String
 from util.database import Base,engine
 
 class ClassManagement(Base):