diff --git a/configure.ac.in b/configure.ac.in
index 7773fa3..ef80357 100644
--- a/configure.ac.in
+++ b/configure.ac.in
@@ -58,10 +58,10 @@ AC_CHECK_LIB(nsl, kstat_open, SOLLIBS="$SOLLIBS -linet_ntop", SOLLIBS="$SOLLIBS"
 AC_SUBST(SOLLIBS)
 
 dnl configure the panel plugin
-XDT_CHECK_PACKAGE([LIBXFCE4PANEL], [libxfce4panel-1.0], [4.9.0])
+XDT_CHECK_PACKAGE([LIBXFCE4PANEL], [libxfce4panel-2.0], [4.12.0])
 
 dnl configure the libxfcegui4
-XDT_CHECK_PACKAGE([LIBXFCE4UI], [libxfce4ui-1], [4.9.0])
+XDT_CHECK_PACKAGE([LIBXFCE4UI], [libxfce4ui-2], [4.12.0])
 
 dnl Check for i18n support
 XDT_I18N([@LINGUAS@])