diff --git a/apps/showcase/src/main/resources/struts.xml b/apps/showcase/src/main/resources/struts.xml
index d59a198cd..a9fe3c9dc 100644
--- a/apps/showcase/src/main/resources/struts.xml
+++ b/apps/showcase/src/main/resources/struts.xml
@@ -33,15 +33,15 @@
     <constant name="struts.configuration.xml.reload" value="false" />
     <constant name="struts.custom.i18n.resources" value="globalMessages" />
     <constant name="struts.action.extension" value="action,," />
-    <constant name="struts.allowlist.enable" value="true" />
 
+    <constant name="struts.allowlist.enable" value="true" />
+    <constant name="struts.allowlist.packageNames"
+              value="
+                org.apache.struts2.showcase.model,
+                org.apache.struts2.showcase.conversion
+    "/>
     <constant name="struts.allowlist.classes"
               value="
-                org.apache.struts2.showcase.model.Employee,
-                org.apache.struts2.showcase.model.Skill,
-                org.apache.struts2.showcase.conversion.Address,
-                org.apache.struts2.showcase.conversion.Person,
-                org.apache.struts2.showcase.conversion.OperationsEnum,
                 org.apache.struts2.showcase.UITagExample$Language,
                 org.apache.struts2.showcase.UITagExample$VehicalType,
                 org.apache.struts2.showcase.UITagExample$VehicalSpecific