diff --git a/configure.in b/configure.in
index 6d5bc07ba9a..dc944386f22 100644
--- a/configure.in
+++ b/configure.in
@@ -12,7 +12,7 @@ dnl
 dnl When changing the major version number please also check the switch
 dnl statement in mysqlbinlog::check_master_version().  You may also need
 dnl to update version.c in ndb.
-AC_INIT([MySQL Server], [5.1.56], [], [mysql])
+AC_INIT([MySQL Server], [5.1.57], [], [mysql])
 
 AC_CONFIG_SRCDIR([sql/mysqld.cc])
 AC_CANONICAL_SYSTEM