diff --git a/Makefile b/Makefile
index e8716e9..497fc3f 100644
--- a/Makefile
+++ b/Makefile
@@ -1,9 +1,11 @@
-PACKER_VERSION ?= 1.2.0
+PACKER_VERSION ?= 1.3.5
 ANNOUNCE ?= http://10.2.2.1:6969/announce
 WEBSEED ?= http://10.2.2.1
 
-DOCKER_IMAGE_BUILDER ?= labsync-builder
-DOCKER_IMAGE_SECURITY_SCANNER ?= security-scanner
+CI_COMMIT_REF_SLUG ?= master
+
+DOCKER_IMAGE_BUILDER ?= labsync-builder:$(CI_COMMIT_REF_SLUG)
+DOCKER_IMAGE_SECURITY_SCANNER ?= security-scanner:$(CI_COMMIT_REF_SLUG)
 
 CWD=$(abspath $(patsubst %/,%,$(dir $(abspath $(lastword $(MAKEFILE_LIST))))))