diff --git a/Makefile b/Makefile
index 83b9c837..5e06dd90 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 .PHONY: all
 
-VERSION := 4.2.0
-RELEASE := 1
+VERSION ?= 4.2.0
+RELEASE ?= 1
 
 ifndef SRC
 	SRC := main