diff --git a/mybatis-flex-spring/src/main/java/com/mybatisflex/spring/service/impl/CacheableServiceImpl.java b/mybatis-flex-spring/src/main/java/com/mybatisflex/spring/service/impl/CacheableServiceImpl.java
index a545d8a5..08677bfe 100644
--- a/mybatis-flex-spring/src/main/java/com/mybatisflex/spring/service/impl/CacheableServiceImpl.java
+++ b/mybatis-flex-spring/src/main/java/com/mybatisflex/spring/service/impl/CacheableServiceImpl.java
@@ -44,7 +44,7 @@ public class CacheableServiceImpl<M extends BaseMapper<T>, T> implements IServic
 
     @Autowired
     @SuppressWarnings("SpringJavaInjectionPointsAutowiringInspection")
-    private M mapper;
+    protected M mapper;
 
     /**
      * {@inheritDoc}
@@ -96,4 +96,4 @@ public class CacheableServiceImpl<M extends BaseMapper<T>, T> implements IServic
         return QueryWrapper.create().from(new QueryTable(tableInfo.getSchema(), tableInfo.getTableName()));
     }
 
-}
\ No newline at end of file
+}