diff --git a/yudao-dependencies/pom.xml b/yudao-dependencies/pom.xml
index a81752a..6c8441f 100644
--- a/yudao-dependencies/pom.xml
+++ b/yudao-dependencies/pom.xml
@@ -58,8 +58,7 @@
         <hutool-6.version>6.0.0-M22</hutool-6.version>
         <fastexcel.version>1.3.0</fastexcel.version>
         <velocity.version>2.4.1</velocity.version>
-        <fastjson.version>1.2.83</fastjson.version>
-        <fastjson2.version>2.0.62</fastjson2.version>
+        <fastjson2.version>2.0.63</fastjson2.version>
         <guava.version>33.6.0-jre</guava.version>
         <transmittable-thread-local.version>2.14.5</transmittable-thread-local.version>
         <commons-net.version>3.13.0</commons-net.version>
@@ -243,6 +242,12 @@
                 <groupId>org.dromara</groupId>
                 <artifactId>easy-trans-anno</artifactId>
                 <version>${easy-trans.version}</version>
+                <exclusions>
+                    <exclusion>
+                        <groupId>com.alibaba</groupId>
+                        <artifactId>fastjson</artifactId>
+                    </exclusion>
+                </exclusions>
             </dependency>
 
             <dependency>
@@ -314,6 +319,12 @@
                 <groupId>org.apache.rocketmq</groupId>
                 <artifactId>rocketmq-spring-boot-starter</artifactId>
                 <version>${rocketmq-spring.version}</version>
+                <exclusions>
+                    <exclusion>
+                        <groupId>com.alibaba</groupId>
+                        <artifactId>fastjson</artifactId>
+                    </exclusion>
+                </exclusions>
             </dependency>
 
             <!-- 服务保障相关 -->
@@ -502,7 +513,7 @@
             <dependency>
                 <groupId>com.alibaba</groupId>
                 <artifactId>fastjson</artifactId>
-                <version>${fastjson.version}</version>
+                <version>${fastjson2.version}</version> <!-- fastjson2 官方提供的 1.x API 兼容实现 -->
             </dependency>
             <dependency>
                 <groupId>com.alibaba.fastjson2</groupId>
@@ -631,6 +642,12 @@
                 <groupId>me.zhyd.oauth</groupId>
                 <artifactId>JustAuth</artifactId> <!-- 社交登陆（例如说，个人微信、企业微信等等） -->
                 <version>${justauth.version}</version>
+                <exclusions>
+                    <exclusion>
+                        <groupId>com.alibaba</groupId>
+                        <artifactId>fastjson</artifactId>
+                    </exclusion>
+                </exclusions>
             </dependency>
             <dependency>
                 <groupId>com.xkcoding.justauth</groupId>
@@ -654,6 +671,10 @@
                         <groupId>org.bouncycastle</groupId>
                         <artifactId>bcprov-jdk15on</artifactId>
                     </exclusion>
+                    <exclusion>
+                        <groupId>com.alibaba</groupId>
+                        <artifactId>fastjson</artifactId>
+                    </exclusion>
                 </exclusions>
             </dependency>
 
@@ -696,6 +717,12 @@
                 <groupId>org.jeecgframework.jimureport</groupId>
                 <artifactId>jimureport-spring-boot3-starter</artifactId>
                 <version>${jimureport.version}</version>
+                <exclusions>
+                    <exclusion>
+                        <groupId>com.alibaba</groupId>
+                        <artifactId>fastjson</artifactId>
+                    </exclusion>
+                </exclusions>
             </dependency>
             <dependency>
                 <groupId>org.jeecgframework.jimureport</groupId>
@@ -710,6 +737,10 @@
                         <groupId>cn.hutool</groupId>
                         <artifactId>hutool-core</artifactId>
                     </exclusion>
+                    <exclusion>
+                        <groupId>com.alibaba</groupId>
+                        <artifactId>fastjson</artifactId>
+                    </exclusion>
                 </exclusions>
             </dependency>
         </dependencies>
diff --git a/yudao-framework/yudao-common/pom.xml b/yudao-framework/yudao-common/pom.xml
index 357c12b..c43dd2a 100644
--- a/yudao-framework/yudao-common/pom.xml
+++ b/yudao-framework/yudao-common/pom.xml
@@ -134,6 +134,11 @@
         </dependency>
 
         <dependency>
+            <groupId>com.alibaba</groupId>
+            <artifactId>fastjson</artifactId> <!-- JustAuth、Jimu 等三方库仍使用 1.x 包名，由项目统一提供 fastjson2 兼容实现 -->
+        </dependency>
+
+        <dependency>
             <groupId>org.dromara</groupId> <!-- VO 数据翻译 -->
             <artifactId>easy-trans-anno</artifactId> <!-- 默认引入的原因，方便 xxx-module-api 包使用 -->
         </dependency>
diff --git a/yudao-module-ai/pom.xml b/yudao-module-ai/pom.xml
index 25947cf..b205413 100644
--- a/yudao-module-ai/pom.xml
+++ b/yudao-module-ai/pom.xml
@@ -242,6 +242,10 @@
                     <groupId>org.slf4j</groupId>
                     <artifactId>slf4j-reload4j</artifactId>
                 </exclusion>
+                <exclusion>
+                    <groupId>com.alibaba</groupId>
+                    <artifactId>fastjson</artifactId>
+                </exclusion>
             </exclusions>
         </dependency>
     </dependencies>
diff --git a/yudao-module-ai/src/main/java/cn/iocoder/yudao/module/ai/service/workflow/AiWorkflowServiceImpl.java b/yudao-module-ai/src/main/java/cn/iocoder/yudao/module/ai/service/workflow/AiWorkflowServiceImpl.java
index ac16e87..8ee3b4e 100644
--- a/yudao-module-ai/src/main/java/cn/iocoder/yudao/module/ai/service/workflow/AiWorkflowServiceImpl.java
+++ b/yudao-module-ai/src/main/java/cn/iocoder/yudao/module/ai/service/workflow/AiWorkflowServiceImpl.java
@@ -10,8 +10,8 @@ import cn.iocoder.yudao.module.ai.controller.admin.workflow.vo.AiWorkflowTestReq
 import cn.iocoder.yudao.module.ai.dal.dataobject.workflow.AiWorkflowDO;
 import cn.iocoder.yudao.module.ai.dal.mysql.workflow.AiWorkflowMapper;
 import cn.iocoder.yudao.module.ai.service.model.AiModelService;
-import com.alibaba.fastjson.JSONArray;
-import com.alibaba.fastjson.JSONObject;
+import com.alibaba.fastjson2.JSONArray;
+import com.alibaba.fastjson2.JSONObject;
 import dev.tinyflow.core.Tinyflow;
 import jakarta.annotation.Resource;
 import lombok.extern.slf4j.Slf4j;
diff --git a/yudao-module-pay/src/test/java/cn/iocoder/yudao/module/pay/service/channel/PayChannelServiceTest.java b/yudao-module-pay/src/test/java/cn/iocoder/yudao/module/pay/service/channel/PayChannelServiceTest.java
index eb8f694..67c80db 100644
--- a/yudao-module-pay/src/test/java/cn/iocoder/yudao/module/pay/service/channel/PayChannelServiceTest.java
+++ b/yudao-module-pay/src/test/java/cn/iocoder/yudao/module/pay/service/channel/PayChannelServiceTest.java
@@ -12,7 +12,6 @@ import cn.iocoder.yudao.module.pay.framework.pay.core.client.PayClient;
 import cn.iocoder.yudao.module.pay.framework.pay.core.client.PayClientFactory;
 import cn.iocoder.yudao.module.pay.framework.pay.core.client.impl.alipay.AlipayPayClientConfig;
 import cn.iocoder.yudao.module.pay.framework.pay.core.client.impl.weixin.WxPayClientConfig;
-import com.alibaba.fastjson.JSON;
 import jakarta.annotation.Resource;
 import jakarta.validation.Validator;
 import org.junit.jupiter.api.Test;
@@ -109,7 +108,7 @@ public class PayChannelServiceTest extends BaseDbUnitTest {
         AlipayPayClientConfig payClientPublicKeyConfig = randomAlipayPayClientConfig();
         PayChannelUpdateReqVO reqVO = randomPojo(PayChannelUpdateReqVO.class, o -> {
             o.setStatus(CommonStatusEnum.ENABLE.getStatus());
-            o.setConfig(JSON.toJSONString(payClientPublicKeyConfig));
+            o.setConfig(JsonUtils.toJsonString(payClientPublicKeyConfig));
         });
 
         // 调用, 并断言异常
diff --git a/yudao-module-report/src/main/java/cn/iocoder/yudao/module/report/framework/jmreport/core/service/JmOnlDragExternalServiceImpl.java b/yudao-module-report/src/main/java/cn/iocoder/yudao/module/report/framework/jmreport/core/service/JmOnlDragExternalServiceImpl.java
index a61a42f..f61512f 100644
--- a/yudao-module-report/src/main/java/cn/iocoder/yudao/module/report/framework/jmreport/core/service/JmOnlDragExternalServiceImpl.java
+++ b/yudao-module-report/src/main/java/cn/iocoder/yudao/module/report/framework/jmreport/core/service/JmOnlDragExternalServiceImpl.java
@@ -1,13 +1,11 @@
 package cn.iocoder.yudao.module.report.framework.jmreport.core.service;
 
-import com.alibaba.fastjson.JSONObject;
 import lombok.RequiredArgsConstructor;
 import org.jeecg.modules.drag.service.IOnlDragExternalService;
 import org.jeecg.modules.drag.vo.DragDictModel;
 import org.jeecg.modules.drag.vo.DragLogDTO;
 
 import java.util.List;
-import java.util.Map;
 
 /**
  * {@link IOnlDragExternalService} 实现类，提供积木仪表盘的查询等功能
@@ -24,11 +22,6 @@ public class JmOnlDragExternalServiceImpl implements IOnlDragExternalService {
     // ========== DictItem 相关 ==========
 
     @Override
-    public Map<String, List<DragDictModel>> getManyDictItems(List<String> codeList, List<JSONObject> tableDictList) {
-        return IOnlDragExternalService.super.getManyDictItems(codeList, tableDictList);
-    }
-
-    @Override
     public List<DragDictModel> getDictItems(String dictCode) {
         return IOnlDragExternalService.super.getDictItems(dictCode);
     }