diff --git a/mio-project/pom.xml b/mio-project/pom.xml
index 4c89660..f51a340 100644
--- a/mio-project/pom.xml
+++ b/mio-project/pom.xml
@@ -19,7 +19,7 @@
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.8.0</version>
+            <version>2.8.9</version>
         </dependency>
         <dependency>
             <groupId>com.squareup.okhttp3</groupId>