diff --git a/core/data/alembic/versions/680789dabab3_sao_player_changes.py b/core/data/alembic/versions/680789dabab3_sao_player_changes.py
index 9cc60d4..3e4aef7 100644
--- a/core/data/alembic/versions/680789dabab3_sao_player_changes.py
+++ b/core/data/alembic/versions/680789dabab3_sao_player_changes.py
@@ -64,6 +64,12 @@ def upgrade():
     op.add_column('sao_hero_log_data', sa.Column('property4_value1', sa.INTEGER(), server_default='0', nullable=False))
     op.add_column('sao_hero_log_data', sa.Column('property4_value2', sa.INTEGER(), server_default='0', nullable=False))
     op.add_column('sao_hero_log_data', sa.Column('converted_card_num', sa.INTEGER(), server_default='0', nullable=False))
+    op.alter_column('sao_hero_log_data', 'main_weapon',
+               existing_type=mysql.INTEGER(),
+               nullable=True)
+    op.alter_column('sao_hero_log_data', 'sub_equipment',
+               existing_type=mysql.INTEGER(),
+               nullable=True)
     op.alter_column('sao_hero_log_data', 'skill_slot1_skill_id',
                existing_type=mysql.INTEGER(),
                type_=sa.BIGINT(),
@@ -235,12 +241,10 @@ def downgrade():
                type_=mysql.INTEGER(),
                nullable=False)
     op.alter_column('sao_hero_log_data', 'sub_equipment',
-               existing_type=sa.BIGINT(),
-               type_=mysql.INTEGER(),
+               existing_type=mysql.INTEGER(),
                nullable=False)
     op.alter_column('sao_hero_log_data', 'main_weapon',
-               existing_type=sa.BIGINT(),
-               type_=mysql.INTEGER(),
+               existing_type=mysql.INTEGER(),
                nullable=False)
     op.drop_column('sao_hero_log_data', 'converted_card_num')
     op.drop_column('sao_hero_log_data', 'property4_value2')