diff --git a/CMakeLists.txt b/CMakeLists.txt
index f608f3c7..a9aa0f3a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -12,7 +12,7 @@ set(VERSION_EXTRA "" CACHE STRING "Stuff to append to version string")
 # Also remember to set PROTOCOL_VERSION in clientserver.h when releasing
 set(VERSION_MAJOR 0)
 set(VERSION_MINOR 4)
-set(VERSION_PATCH 2-rc1)
+set(VERSION_PATCH 3-rc0)
 if(VERSION_EXTRA)
 	set(VERSION_PATCH ${VERSION_PATCH}-${VERSION_EXTRA})
 endif()
diff --git a/src/clientserver.h b/src/clientserver.h
index a6ba8fe4..82e485d9 100644
--- a/src/clientserver.h
+++ b/src/clientserver.h
@@ -65,9 +65,11 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 		TOSERVER_INVENTORY_FIELDS
 		16-bit node ids
 		TOCLIENT_DETACHED_INVENTORY
+	PROTOCOL_VERSION 13:
+		InventoryList field "Width" (deserialization fails with old versions)
 */
 
-#define PROTOCOL_VERSION 12
+#define PROTOCOL_VERSION 13
 
 #define PROTOCOL_ID 0x4f457403