diff --git a/configure.ac b/configure.ac
index 3381485e..d2710bf2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3,8 +3,8 @@ dnl -*- mode: m4; -*-
 AC_PREREQ(2.60)
 
 define([PACKAGE_VERSION_MAJOR], [0])
-define([PACKAGE_VERSION_MINOR], [12])
-define([PACKAGE_VERSION_FIX], [3])
+define([PACKAGE_VERSION_MINOR], [13])
+define([PACKAGE_VERSION_FIX], [0])
 define([PACKAGE_SUFFIX], [-pre1])
 
 AC_INIT([opensc],[PACKAGE_VERSION_MAJOR.PACKAGE_VERSION_MINOR.PACKAGE_VERSION_FIX[]PACKAGE_SUFFIX])