diff --git a/mateclaw-server/src/main/java/vip/mate/config/MybatisPlusConfig.java b/mateclaw-server/src/main/java/vip/mate/config/MybatisPlusConfig.java
index 6f120b53..37ab1e20 100644
--- a/mateclaw-server/src/main/java/vip/mate/config/MybatisPlusConfig.java
+++ b/mateclaw-server/src/main/java/vip/mate/config/MybatisPlusConfig.java
@@ -22,6 +22,12 @@ public class MybatisPlusConfig implements MetaObjectHandler {
 
     @Override
     public void updateFill(MetaObject metaObject) {
-        this.strictUpdateFill(metaObject, "updateTime", LocalDateTime.class, LocalDateTime.now());
+        // Use setFieldValByName (unconditional) rather than strictUpdateFill,
+        // which is a no-op when the field already has a value. After a row
+        // is loaded from the DB its updateTime is non-null, so the strict
+        // variant left the column frozen at insert time forever — every
+        // mate_* table inherited this. Unconditional fill matches the
+        // documented "updateTime moves on every update" expectation.
+        this.setFieldValByName("updateTime", LocalDateTime.now(), metaObject);
     }
 }