diff --git a/configure.ac b/configure.ac
index b1c434117..8b48ab4e8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -14,7 +14,7 @@ AC_CONFIG_MACRO_DIR([m4])
 AC_CANONICAL_TARGET
 AC_USE_SYSTEM_EXTENSIONS
 
-AM_INIT_AUTOMAKE([-Wall -Werror -Wno-portability foreign tar-ustar subdir-objects serial-tests])
+AM_INIT_AUTOMAKE([1.11 -Wall -Werror -Wno-portability foreign tar-ustar subdir-objects serial-tests])
 
 AC_CANONICAL_HOST
 AC_CANONICAL_BUILD