diff --git a/CMakeLists.txt b/CMakeLists.txt
index de287a9f..1cb052de 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -12,7 +12,7 @@ add_definitions (-D_GNU_SOURCE)
 # the version number.
 set (MINIGUI_MAJOR_VERSION 3)
 set (MINIGUI_MINOR_VERSION 0)
-set (MINIGUI_MICRO_VERSION 12)
+set (MINIGUI_MICRO_VERSION 13)
 
 set (MINIGUI_NAME "minigui")
 set (MGLIB_SUFFIX "")
diff --git a/configure.in b/configure.ac
similarity index 99%
rename from configure.in
rename to configure.ac
index 3e1ae29f..73bab339 100644
--- a/configure.in
+++ b/configure.ac
@@ -1,10 +1,7 @@
 dnl Process this file with autoconf to produce a configure script.
-AC_PREREQ(2.52)
-
-dnl ========================================================================
-dnl Put the name and version of the package here
-AC_INIT([libminigui], [3.0.13])
-AC_CONFIG_SRCDIR([src/main/main.c])
+AC_PREREQ(2.60)
+AC_INIT(libminigui, 3.0.13)
+AC_CONFIG_SRCDIR(src/main/main.c)
 
 dnl Set various version strings - taken gratefully from the SDL sources
 #
@@ -47,7 +44,8 @@ AC_CANONICAL_SYSTEM
 
 dnl ========================================================================
 dnl Init automake
-AM_INIT_AUTOMAKE([no-define])
+AM_INIT_AUTOMAKE
+
 AC_CONFIG_HEADER(mgconfig.h)
 
 dnl ========================================================================