diff --git a/libphobos/ChangeLog b/libphobos/ChangeLog
index a2ccba0cddb..13b93352918 100644
--- a/libphobos/ChangeLog
+++ b/libphobos/ChangeLog
@@ -1,3 +1,7 @@
+2019-03-23  Johannes Pfau  <johannespfau@gmail.com>
+
+	* configure.ac: Update autotool version comment.
+
 2019-02-19  Bernd Edlinger  <bernd.edlinger@hotmail.de>
 
 	* src/Makefile.am: Avoid the -D option which is not available
diff --git a/libphobos/configure.ac b/libphobos/configure.ac
index 96010333a39..8cc735563cb 100644
--- a/libphobos/configure.ac
+++ b/libphobos/configure.ac
@@ -18,12 +18,12 @@
 # This requires that you have your environment set-up to use explicit
 # versions of automake and autoconf.
 #
-#    export ACLOCAL=/usr/bin/aclocal-1.11
-#    export AUTOMAKE=/usr/bin/automake-1.11
-#    export AUTOM4TE=/usr/bin/autom4te2.64
-#    export AUTOCONF=/usr/bin/autoconf2.64
+#    export ACLOCAL=/usr/bin/aclocal-1.15
+#    export AUTOMAKE=/usr/bin/automake-1.15
+#    export AUTOM4TE=/usr/bin/autom4te2.69
+#    export AUTOCONF=/usr/bin/autoconf2.69
 #
-#    autoreconf2.64
+#    autoreconf2.69
 #
 
 AC_INIT(package-unused, version-unused,, libphobos)