diff --git a/configure.ac b/configure.ac
index 46d53f783..5a9af7835 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3,7 +3,7 @@ dnl STATUS: "X" for prerelease beta builds,
 dnl         "Z" for unsupported trunk builds,
 dnl         "0" for stable, supported releases
 dnl these should be the only two lines you need to change
-m4_define([user_agent_prefix],[2.40b2])
+m4_define([user_agent_prefix],[2.40b3])
 m4_define([peer_id_prefix],[-TR233X-])
 
 AC_INIT([transmission],