diff --git a/configure.in b/configure.in
index fe1b852f..253a5ebf 100644
--- a/configure.in
+++ b/configure.in
@@ -1,4 +1,4 @@
-AC_INIT([Icecast], [2.0.0], [icecast@xiph.org])
+AC_INIT([Icecast], [2.1-trunk], [icecast@xiph.org])
 
 AC_PREREQ(2.54)
 AC_CONFIG_SRCDIR(src/main.c)