Index: src/XMPPConnection.h
==================================================================
--- src/XMPPConnection.h
+++ src/XMPPConnection.h
@@ -336,10 +336,11 @@
 - (uint16_t)port;
 - (void)setDataStorage: (id <XMPPStorage>)dataStorage;
 - (id <XMPPStorage>)dataStorage;
 - (void)setLanguage: (OFString*)language;
 - (OFString*)language;
+- (BOOL)rosterVersioningSupported;
 
 /// \cond internal
 - (void)XMPP_startStream;
 - (void)XMPP_handleStream: (OFXMLElement*)element;
 - (void)XMPP_handleTLS: (OFXMLElement*)element;