diff --git a/src/Makefile.defs b/src/Makefile.defs
index 2a8a80cb2bf..fe0e4a90fb9 100644
--- a/src/Makefile.defs
+++ b/src/Makefile.defs
@@ -107,7 +107,7 @@ INSTALL_FLAVOUR=$(FLAVOUR)
 VERSION = 5
 PATCHLEVEL = 3
 SUBLEVEL =  0
-EXTRAVERSION = -pre0
+EXTRAVERSION = -pre1
 
 # memory manager switcher
 # 0 - f_malloc (fast malloc)