diff --git a/ChangeLog b/ChangeLog
index 9028f4df..33686c90 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,6 @@
+Changes in version 2.0.20-stable (?? ??? 2012)
+
+
 Changes in version 2.0.19-stable (3 May 2012)
 BUGFIXES (CORE):
  o Refactor event_persist_closure: raise and extract some common logic (bec22b4)
diff --git a/WIN32-Code/event2/event-config.h b/WIN32-Code/event2/event-config.h
index 00ee29d5..17853b18 100644
--- a/WIN32-Code/event2/event-config.h
+++ b/WIN32-Code/event2/event-config.h
@@ -277,7 +277,7 @@
 /* #undef _EVENT_HAVE_WORKING_KQUEUE */
 
 /* Numeric representation of the version */
-#define _EVENT_NUMERIC_VERSION 0x02001300
+#define _EVENT_NUMERIC_VERSION 0x02001301
 
 /* Name of package */
 #define _EVENT_PACKAGE "libevent"
@@ -334,7 +334,7 @@
 #define _EVENT_TIME_WITH_SYS_TIME 1
 
 /* Version number of package */
-#define _EVENT_VERSION "2.0.19-stable"
+#define _EVENT_VERSION "2.0.19-stable-dev"
 
 /* Define to appropriate substitue if compiler doesnt have __func__ */
 #define _EVENT___func__ __FUNCTION__
diff --git a/configure.in b/configure.in
index 8e67b21f..27cb7ada 100644
--- a/configure.in
+++ b/configure.in
@@ -11,9 +11,9 @@ AC_INIT(event.c)
 
 AC_CONFIG_MACRO_DIR([m4])
 
-AM_INIT_AUTOMAKE(libevent,2.0.19-stable)
+AM_INIT_AUTOMAKE(libevent,2.0.19-stable-dev)
 AM_CONFIG_HEADER(config.h)
-AC_DEFINE(NUMERIC_VERSION, 0x02001300, [Numeric representation of the version])
+AC_DEFINE(NUMERIC_VERSION, 0x02001301, [Numeric representation of the version])
 
 dnl Initialize prefix.
 if test "$prefix" = "NONE"; then