diff --git a/javalin6/javalin-jetty-sessions-example/src/main/java/app/JavalinJettySessionExampleApp.java b/javalin6/javalin-jetty-sessions-example/src/main/java/app/JavalinJettySessionExampleApp.java
index a02cc71..470ff8c 100644
--- a/javalin6/javalin-jetty-sessions-example/src/main/java/app/JavalinJettySessionExampleApp.java
+++ b/javalin6/javalin-jetty-sessions-example/src/main/java/app/JavalinJettySessionExampleApp.java
@@ -7,7 +7,7 @@
 public class JavalinJettySessionExampleApp {
     public static void main(String[] args) {
 
-        Javalin app = Javalin.create(config -> {
+        var app = Javalin.create(config -> {
             config.jetty.modifyServletContextHandler(handler -> handler.setSessionHandler(fileSessionHandler()));
             config.bundledPlugins.enableRouteOverview("/");
         }).start(7070);
diff --git a/javalin6/pom.xml b/javalin6/pom.xml
index 47a2ce1..c87105f 100644
--- a/javalin6/pom.xml
+++ b/javalin6/pom.xml
@@ -29,6 +29,18 @@
         <module>javalinvue-example/javalinvue2-example</module>
         <module>javalinvue-example/javalinvue3-example</module>
     </modules>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>16</source>
+                    <target>16</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
 
     <profiles>
         <profile>