diff --git a/NEWS b/NEWS
index d59a682..968dd7b 100644
--- a/NEWS
+++ b/NEWS
@@ -1,6 +1,9 @@
 -------------------------------------------------------------------------------
 Changes in version 2.00
 
+- This version updates the API to add new features.  Plugins compiled
+  for previous versions of mailfront will not work without recompiling.
+
 Development of this version has been sponsored by FutureQuest, Inc.
 ossi@FutureQuest.net  http://www.FutureQuest.net/
 -------------------------------------------------------------------------------
diff --git a/mailfront.h b/mailfront.h
index 72cb6eb..4b4522f 100644
--- a/mailfront.h
+++ b/mailfront.h
@@ -8,7 +8,7 @@
 
 #define FLAG_NEED_FILE (1<<0)
 
-#define PLUGIN_VERSION 2
+#define PLUGIN_VERSION 3
 
 struct plugin
 {
@@ -26,7 +26,7 @@ struct plugin
   const response* (*message_end)(int fd);
 };
 
-#define PROTOCOL_VERSION 2
+#define PROTOCOL_VERSION 3
 
 struct protocol
 {