diff --git a/demo-lesson-one/pom.xml b/demo-lesson-one/pom.xml
index fbfec15..eeb3d87 100644
--- a/demo-lesson-one/pom.xml
+++ b/demo-lesson-one/pom.xml
@@ -32,7 +32,7 @@
         <dependency>
             <groupId>com.alibaba</groupId>
             <artifactId>fastjson</artifactId>
-            <version>1.2.47</version>
+            <version>1.2.83</version>
         </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>