diff --git a/Makefile b/Makefile
index a76d705..0697ab9 100644
--- a/Makefile
+++ b/Makefile
@@ -29,6 +29,7 @@ LABEL                      ?= commit-id
 IMAGE_NAME                 := maas-rack-controller maas-region-controller sstream-cache
 BUILD_DIR                  := $(shell mktemp -d)
 HELM                       := $(BUILD_DIR)/helm
+SSTREAM_IMAGE              := "https://images.maas.io/ephemeral-v3/daily/"
 
 .PHONY: images
 #Build all images in the list
@@ -64,9 +65,9 @@ helm-install:
 .PHONY: build
 build:
 ifeq ($(USE_PROXY), true)
-	docker build -t $(IMAGE) --label $(LABEL) -f $(IMAGE_DIR)/Dockerfile --build-arg http_proxy=$(PROXY) --build-arg https_proxy=$(PROXY) $(IMAGE_DIR)
+	docker build -t $(IMAGE) --label $(LABEL) -f $(IMAGE_DIR)/Dockerfile --build-arg SSTREAM_IMAGE=$(SSTREAM_IMAGE) --build-arg http_proxy=$(PROXY) --build-arg https_proxy=$(PROXY) $(IMAGE_DIR)
 else
-	docker build -t $(IMAGE) --label $(LABEL) -f $(IMAGE_DIR)/Dockerfile $(IMAGE_DIR)
+	docker build -t $(IMAGE) --label $(LABEL) --build-arg SSTREAM_IMAGE=$(SSTREAM_IMAGE) -f $(IMAGE_DIR)/Dockerfile $(IMAGE_DIR)
 endif
 ifeq ($(PUSH_IMAGE), true)
 	docker push $(IMAGE)
diff --git a/images/sstream-cache/Dockerfile b/images/sstream-cache/Dockerfile
index dbeba6e..d1f145a 100644
--- a/images/sstream-cache/Dockerfile
+++ b/images/sstream-cache/Dockerfile
@@ -1,6 +1,7 @@
 FROM ubuntu:16.04
 
-ENV IMAGE_SRC https://images.maas.io/ephemeral-v3/daily/
+ARG SSTREAM_IMAGE=https://images.maas.io/ephemeral-v3/daily/
+ENV IMAGE_SRC ${SSTREAM_IMAGE}
 
 RUN apt-get -qq update && \
     apt install -y simplestreams \