diff --git a/jero-boot/db/蔚来标准sql/dev_2nd_period.sql b/jero-boot/db/蔚来标准sql/dev_2nd_period.sql
index 079c40133..ea739fe22 100644
--- a/jero-boot/db/蔚来标准sql/dev_2nd_period.sql
+++ b/jero-boot/db/蔚来标准sql/dev_2nd_period.sql
@@ -434,3 +434,6 @@ ALTER TABLE `project_related_personnel`
 ALTER TABLE `project_task_planning`
     ADD COLUMN `certification_submission` datetime(0) NULL COMMENT '认证提交' AFTER `attestation_start_time`;
 
+-- 项目库-认证清单-认证目录 说明字段长度修改  2023-3-30   未同步生产环境
+ALTER TABLE `project_certification_directory`
+    MODIFY COLUMN `explain_info` varchar(2000) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL COMMENT '说明' AFTER `detection_report_location`;
\ No newline at end of file