diff --git a/configure.ac b/configure.ac
index 6654070..928424d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3,7 +3,7 @@ dnl Process this file with autoconf to produce a configure script.
 dnl Minimum Autoconf version required.
 AC_PREREQ(2.59)
 
-AC_INIT([fping],[4.0-rc1])
+AC_INIT([fping],[4.0-rc2])
 
 dnl --disable-ipv4
 AC_ARG_ENABLE([ipv4],