diff --git a/autogen.sh b/autogen.sh
index c705a0fe9f..291865840c 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -38,11 +38,11 @@ test "$autoversion" != "" && {
 
 
 case $autoversion in
-    *' '2.59[cd]|*' '2.60[ab]|*' '2.6[0-2])
+    *' '2.59[cd]|*' '2.60[ab]|*' '2.6[0-3])
 	;;
     *)
 	echo "This autoconf version is not supported by LyX."
-	echo "LyX only supports autoconf 2.59c-2.62."
+	echo "LyX only supports autoconf 2.59c-2.63."
 	exit 1
 	;;
 esac