diff --git a/backend/alembic/versions/014_modify_chat_record.py b/backend/alembic/versions/014_modify_chat_record.py
new file mode 100644
index 0000000..ba3b6b1
--- /dev/null
+++ b/backend/alembic/versions/014_modify_chat_record.py
@@ -0,0 +1,29 @@
+"""modify_chat_record
+
+Revision ID: fde8acca6143
+Revises: bfa10ce83d73
+Create Date: 2025-06-23 16:39:39.499180
+
+"""
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel.sql.sqltypes
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision = 'fde8acca6143'
+down_revision = 'bfa10ce83d73'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('chat_record', sa.Column('predict_data', sa.Text(), nullable=True))
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('chat_record', 'predict_data')
+    # ### end Alembic commands ###