diff --git a/backend/alembic/versions/013_modify_chat.py b/backend/alembic/versions/013_modify_chat.py
new file mode 100644
index 0000000..2a565a4
--- /dev/null
+++ b/backend/alembic/versions/013_modify_chat.py
@@ -0,0 +1,35 @@
+"""010_modify_chat
+
+Revision ID: bfa10ce83d73
+Revises: 8dc3b1bdbfef
+Create Date: 2025-06-18 14:16:39.230619
+
+"""
+from alembic import op
+import sqlalchemy as sa
+import sqlmodel.sql.sqltypes
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision = 'bfa10ce83d73'
+down_revision = 'a3af70d43e98'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('chat_record', sa.Column('analysis', sa.Text(), nullable=True))
+    op.add_column('chat_record', sa.Column('predict', sa.Text(), nullable=True))
+    op.add_column('chat_record', sa.Column('full_analysis_message', sa.Text(), nullable=True))
+    op.add_column('chat_record', sa.Column('full_predict_message', sa.Text(), nullable=True))
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('chat_record', 'full_predict_message')
+    op.drop_column('chat_record', 'full_analysis_message')
+    op.drop_column('chat_record', 'predict')
+    op.drop_column('chat_record', 'analysis')
+    # ### end Alembic commands ###