diff --git a/src/main/resources/schemas/schema_v2.4.sql b/src/main/resources/schemas/schema_v2.4.sql
index 1ec76c61..4ca8a0fe 100644
--- a/src/main/resources/schemas/schema_v2.4.sql
+++ b/src/main/resources/schemas/schema_v2.4.sql
@@ -1248,3 +1248,4 @@ CALL Pro_Temp_ColumnWork('basic_bussiness_type', 'checkWebNewType', 'tinyint', 1
 CALL Pro_Temp_ColumnWork('auth_company', 'refEntId',
                          '   varchar(255) DEFAULT NULL COMMENT ''接口调用企业的唯一标识''',
                          1);
+call Modify_UNIQUE_index('io_code_lost', 'code', 'uniqueCode', 'BTREE');