diff --git a/src/main/resources/META-INF/VAADIN/package.properties b/src/main/resources/META-INF/VAADIN/package.properties
new file mode 100644
index 0000000..b2b7e21
--- /dev/null
+++ b/src/main/resources/META-INF/VAADIN/package.properties
@@ -0,0 +1 @@
+vaadin.allowed-packages=com.flowingcode
\ No newline at end of file