diff --git a/cartographer/protobuf/java/util/pom.xml b/cartographer/protobuf/java/util/pom.xml
index 35afb84..a264377 100644
--- a/cartographer/protobuf/java/util/pom.xml
+++ b/cartographer/protobuf/java/util/pom.xml
@@ -28,7 +28,7 @@
     <dependency>
       <groupId>com.google.code.gson</groupId>
       <artifactId>gson</artifactId>
-      <version>2.7</version>
+      <version>2.8.9</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>