diff --git a/demo/pom.xml b/demo/pom.xml
index e686d75..20dcb86 100644
--- a/demo/pom.xml
+++ b/demo/pom.xml
@@ -21,7 +21,7 @@
         <demo.version>0.1-SNAPSHOT</demo.version>
         <springboot.version>2.2.0.RELEASE</springboot.version>
         <lombok.version>1.18.8</lombok.version>
-        <gson.version>2.8.5</gson.version>
+        <gson.version>2.8.9</gson.version>
         <druid.version>1.1.9</druid.version>
         <pagehelper.version>1.2.3</pagehelper.version>
         <oracle.version>12.1.0.1.0</oracle.version>