diff --git a/configure.in b/configure.in
index db02e3e..2850a22 100644
--- a/configure.in
+++ b/configure.in
@@ -1,5 +1,5 @@
 AC_INIT(as31/as31.c)
-AM_INIT_AUTOMAKE(as31, 2.3.0)
+AM_INIT_AUTOMAKE(as31, 2.3.1)
 
 dnl ********************************************************************
 dnl Minimal Requirements