diff --git a/scripts/phpize.m4 b/scripts/phpize.m4
index f234e68ea8aa..715d0ccf6e55 100644
--- a/scripts/phpize.m4
+++ b/scripts/phpize.m4
@@ -1,6 +1,6 @@
 dnl This file becomes configure.ac for self-contained extensions.
 
-AC_PREREQ(2.59)
+AC_PREREQ([2.64])
 AC_INIT(config.m4)
 ifdef([AC_PRESERVE_HELP_ORDER], [AC_PRESERVE_HELP_ORDER], [])