diff --git a/autogen.sh b/autogen.sh
index cc184c6..b06685a 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -5,12 +5,12 @@
 autogen.sh: You don't seem to have the Xfce development tools installed on
             your system, which are required to build this software.
             Please install the xfce4-dev-tools package first, it is available
-            from http://www.xfce.org/.
+            from your distribution or https://www.xfce.org/.
 EOF
   exit 1
 }
 
 test -d m4 || mkdir m4
 
-XDT_AUTOGEN_REQUIRED_VERSION="4.7.3" \
+XDT_AUTOGEN_REQUIRED_VERSION="4.14.0" \
 exec xdt-autogen $@