diff --git a/scripts/xdt-autogen.in.in b/scripts/xdt-autogen.in.in
index 2d14ef8..5e2ce49 100644
--- a/scripts/xdt-autogen.in.in
+++ b/scripts/xdt-autogen.in.in
@@ -429,7 +429,7 @@ done
 ## simply aclocal.
 ##
 test -z "${XDT_PROG_ACLOCAL}" &&
-for i in aclocal-1.10 aclocal-1.9 aclocal-1.8 aclocal; do
+for i in aclocal-1.11 aclocal-1.10 aclocal-1.9 aclocal-1.8 aclocal; do
   (${i} --version) </dev/null >/dev/null 2>&1 &&
   XDT_PROG_ACLOCAL=${i} && break
 done
@@ -473,7 +473,7 @@ done
 ## simply automake.
 ##
 test -z "${XDT_PROG_AUTOMAKE}" &&
-for i in automake-1.10 automake-1.9 automake-1.8 automake; do
+for i in automake-1.11 automake-1.10 automake-1.9 automake-1.8 automake; do
   (${i} --version) </dev/null >/dev/null 2>&1 &&
   XDT_PROG_AUTOMAKE=${i} && break
 done