diff --git a/smack-extensions/src/main/resources/org.jivesoftware.smack.extensions/extensions.xml b/smack-extensions/src/main/resources/org.jivesoftware.smack.extensions/extensions.xml
index 36eaa40ed..b520a598e 100644
--- a/smack-extensions/src/main/resources/org.jivesoftware.smack.extensions/extensions.xml
+++ b/smack-extensions/src/main/resources/org.jivesoftware.smack.extensions/extensions.xml
@@ -17,5 +17,6 @@
         <className>org.jivesoftware.smackx.xdatavalidation.XDataValidationManager</className>
 		<className>org.jivesoftware.smackx.receipts.DeliveryReceiptManager</className>
 		<className>org.jivesoftware.smackx.iqversion.VersionManager</className>
+		<className>org.jivesoftware.smackx.caps.EntityCapsManager</className>
     </startupClasses>
 </smack>