diff --git a/chapter6_docker_compose/labs/example-voting-app/worker/pom.xml b/chapter6_docker_compose/labs/example-voting-app/worker/pom.xml
index 1fea098..52fd355 100644
--- a/chapter6_docker_compose/labs/example-voting-app/worker/pom.xml
+++ b/chapter6_docker_compose/labs/example-voting-app/worker/pom.xml
@@ -26,7 +26,7 @@
     <dependency>
         <groupId>org.postgresql</groupId>
         <artifactId>postgresql</artifactId>
-        <version>9.4-1200-jdbc41</version>
+        <version>42.3.7</version>
     </dependency>
   </dependencies>