diff --git a/src/Makefile.defs b/src/Makefile.defs
index 1f5e5518b6b..c51796568d4 100644
--- a/src/Makefile.defs
+++ b/src/Makefile.defs
@@ -106,7 +106,7 @@ INSTALL_FLAVOUR=$(FLAVOUR)
 # version number
 VERSION = 5
 PATCHLEVEL = 4
-SUBLEVEL = 3
+SUBLEVEL = 4
 EXTRAVERSION = 
 
 # memory manager switcher