diff --git a/src/Makefile.defs b/src/Makefile.defs
index 5242d223d9e..33135244699 100644
--- a/src/Makefile.defs
+++ b/src/Makefile.defs
@@ -105,9 +105,9 @@ INSTALL_FLAVOUR=$(FLAVOUR)
 
 # version number
 VERSION = 5
-PATCHLEVEL = 3
+PATCHLEVEL = 4
 SUBLEVEL =  0
-EXTRAVERSION = -pre2
+EXTRAVERSION = -dev0
 
 # memory manager switcher
 # 0 - f_malloc (fast malloc)