diff --git a/Makefile b/Makefile
index 63dd23a..73b8b87 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@ GO=go
 GOLDFLAGS=-v -s -w -X main.VersionString=$(PROGRAM_VERSION)
 GOBUILDFLAGS=-v -p $(shell nproc) -ldflags="$(GOLDFLAGS)"
 PROGRAM=thalos-server
-PROGRAM_VERSION=1.1.4
+PROGRAM_VERSION ?= 1.1.4
 PREFIX=/usr/local
 BINDIR=$(PREFIX)/bin
 CFGDIR=$(PREFIX)/etc/thalos