diff --git a/UserGuide.md b/UserGuide.md
index c5d4710b..331ef276 100644
--- a/UserGuide.md
+++ b/UserGuide.md
@@ -74,7 +74,7 @@ The Gson instance does not maintain any state while invoking Json operations. So
 ## <a name="TOC-Gson-With-Gradle"></a>Using Gson with Gradle/Android
 ```
 dependencies {
-    implementation 'com.google.code.gson:gson:2.8.8'
+    implementation 'com.google.code.gson:gson:2.8.9'
 }
 ```
 ## <a name="TOC-Gson-With-Maven"></a>Using Gson with Maven
@@ -86,7 +86,7 @@ To use Gson with Maven2/3, you can use the Gson version available in Maven Centr
     <dependency>
       <groupId>com.google.code.gson</groupId>
       <artifactId>gson</artifactId>
-      <version>2.8.8</version>
+      <version>2.8.9</version>
       <scope>compile</scope>
     </dependency>
 </dependencies>
diff --git a/proto/pom.xml b/proto/pom.xml
index 14fd44ce..afe55a1c 100644
--- a/proto/pom.xml
+++ b/proto/pom.xml
@@ -55,7 +55,7 @@
     <dependency>
       <groupId>com.google.code.gson</groupId>
       <artifactId>gson</artifactId>
-      <version>2.8.8</version>
+      <version>2.8.9</version>
       <scope>compile</scope>
     </dependency>