diff --git a/docker.mk b/docker.mk
index a0bc50c..8244c96 100644
--- a/docker.mk
+++ b/docker.mk
@@ -44,6 +44,7 @@
   -e "HEADLESS_BUILD=$(HEADLESS_BUILD)" \
   -e "IS_JENKINS=$(IS_JENKINS)" \
   -e "IS_EXTERNAL=$(IS_EXTERNAL)" \
+  -e "RELEASE_NAME=$(RELEASE_NAME)" \
   -e "http_proxy=$(http_proxy)" \
   -e "USERSPACE_ARCH=$(USERSPACE_ARCH)" \
   -e "QEMU_ARCH=$(QEMU_ARCH)"
diff --git a/multistrap.mk b/multistrap.mk
index fd35fbd..05daff6 100644
--- a/multistrap.mk
+++ b/multistrap.mk
@@ -43,6 +43,7 @@
 	cp $(ROOTDIR)/board/multistrap.conf $(PRODUCT_OUT)/multistrap
 else
 	cp $(ROOTDIR)/board/multistrap-jenkins.conf $(PRODUCT_OUT)/multistrap/multistrap.conf
+	sed -i -e 's/RELEASE_NAME/$(RELEASE_NAME)/g' $(PRODUCT_OUT)/multistrap/multistrap.conf
 endif
 
 	sed -i -e 's/USERSPACE_ARCH/$(USERSPACE_ARCH)/g' $(PRODUCT_OUT)/multistrap/multistrap.conf
diff --git a/preamble.mk b/preamble.mk
index 763264f..e14b48d 100644
--- a/preamble.mk
+++ b/preamble.mk
@@ -20,6 +20,7 @@
 ifneq ($(IS_JENKINS),)
   IS_EXTERNAL = true
   FETCH_PACKAGES = true
+  RELEASE_NAME ?= unstable
 endif
 
 ifeq (,$(wildcard /etc/dpkg/origins/glinux))
diff --git a/rootfs.mk b/rootfs.mk
index 342532a..89cfa77 100644
--- a/rootfs.mk
+++ b/rootfs.mk
@@ -81,6 +81,7 @@
 	cp $(ROOTDIR)/board/multistrap.conf $(PRODUCT_OUT)
 else
 	cp $(ROOTDIR)/board/multistrap-jenkins.conf $(PRODUCT_OUT)/multistrap.conf
+	sed -i -e 's/RELEASE_NAME/$(RELEASE_NAME)/g' $(PRODUCT_OUT)/multistrap.conf
 endif
 
 	sed -i -e 's/MAIN_PACKAGES/$(PACKAGES_EXTRA)/g' $(PRODUCT_OUT)/multistrap.conf