diff --git a/walkthroughs/week-4-libraries/maps/examples/marker-storage/pom.xml b/walkthroughs/week-4-libraries/maps/examples/marker-storage/pom.xml
index 00e3527..921db9d 100644
--- a/walkthroughs/week-4-libraries/maps/examples/marker-storage/pom.xml
+++ b/walkthroughs/week-4-libraries/maps/examples/marker-storage/pom.xml
@@ -33,7 +33,7 @@
     <dependency>
       <groupId>com.google.code.gson</groupId>
       <artifactId>gson</artifactId>
-      <version>2.8.5</version>
+      <version>2.8.9</version>
     </dependency>
 
     <dependency>