upgraded execution environment
diff --git a/bundles/org.eclipse.rap.rwt.visualization.google.demo/META-INF/MANIFEST.MF b/bundles/org.eclipse.rap.rwt.visualization.google.demo/META-INF/MANIFEST.MF
index 2e95570..f58e0ca 100644
--- a/bundles/org.eclipse.rap.rwt.visualization.google.demo/META-INF/MANIFEST.MF
+++ b/bundles/org.eclipse.rap.rwt.visualization.google.demo/META-INF/MANIFEST.MF
@@ -5,7 +5,7 @@
 Bundle-Version: 1.5.0.qualifier
 Require-Bundle: org.eclipse.rap.ui,
  org.eclipse.rap.rwt.visualization.google;bundle-version="1.0.0"
-Bundle-RequiredExecutionEnvironment: J2SE-1.4
+Bundle-RequiredExecutionEnvironment: J2SE-1.5
 Import-Package: javax.servlet;version="2.4.0",
  javax.servlet.http;version="2.4.0"
 Bundle-Vendor: %Bundle-Vendor