diff --git a/configure.ac b/configure.ac
index 0e40b325d..71d229034 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-AC_INIT([re2c],[1.3],[re2c-general@lists.sourceforge.net])
+AC_INIT([re2c],[2.0],[re2c-general@lists.sourceforge.net])
 AC_CONFIG_AUX_DIR([build-aux])
 AM_INIT_AUTOMAKE([foreign subdir-objects dist-xz no-dist-gzip])
 AM_SILENT_RULES([yes])