diff --git a/java/demo/build.xml b/java/demo/build.xml
index b9ed0cb59..5cc93a78d 100644
--- a/java/demo/build.xml
+++ b/java/demo/build.xml
@@ -30,7 +30,7 @@
       </fileset>
     </copy>
     <javac srcdir="src" destdir="war/WEB-INF/classes" classpathref="project.classpath" debug="on"
-           includeAntRuntime="false"/>
+           includeAntRuntime="false" source="1.8" target="1.8"/>
   </target>
 
   <target name="runserver" depends="compile" description="Starts the development server.">
diff --git a/java/demo/war/WEB-INF/lib/servlet-api-2.5.jar b/java/demo/war/WEB-INF/lib/servlet-api-2.5.jar
new file mode 100644
index 000000000..fb5249346
Binary files /dev/null and b/java/demo/war/WEB-INF/lib/servlet-api-2.5.jar differ