diff --git a/java11/sparkjava/pom.xml b/java11/sparkjava/pom.xml
index b89342f..aeebf02 100644
--- a/java11/sparkjava/pom.xml
+++ b/java11/sparkjava/pom.xml
@@ -40,7 +40,7 @@ limitations under the License.
     <dependency>
       <groupId>com.google.code.gson</groupId>
       <artifactId>gson</artifactId>
-      <version>2.8.5</version>
+      <version>2.8.9</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>