diff --git a/Makefile b/Makefile
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,7 @@
 REPO=repo
 TMP=sdk
 ARGS="--user"
+FSDK_VERSION?=1.6
 ARCH?=$(shell flatpak --default-arch)

 all: $(REPO)/config $(foreach file, $(wildcard *.json), $(subst .json,.app,$(file)))
@@ -15,15 +16,15 @@
        ostree init --mode=archive-z2 --repo=$(REPO)

 remotes:
-       flatpak remote-add --if-not-exists flathub https://dl.flathub.org/repo/flathub.flatpakrepo
+       flatpak remote-add --if-not-exists $(ARGS) flathub https://dl.flathub.org/repo/flathub.flatpakrepo

 deps:
-       flatpak install --arch=$(ARCH) $(ARGS) flathub org.freedesktop.Platform.Locale 1.6; true
-       flatpak install --arch=$(ARCH) $(ARGS) flathub org.freedesktop.Sdk.Locale 1.6; true
-       flatpak install --arch=$(ARCH) $(ARGS) flathub org.freedesktop.Platform 1.6; true
-       flatpak install --arch=$(ARCH) $(ARGS) flathub org.freedesktop.Sdk 1.6; true
-       flatpak install --arch=$(ARCH) $(ARGS) flathub org.freedesktop.Sdk.Debug 1.6; true
-       flatpak install --arch=$(ARCH) $(ARGS) flathub org.freedesktop.Sdk.Docs 1.6; true
+       flatpak install --arch=$(ARCH) $(ARGS) flathub org.freedesktop.Platform.Locale $(FSDK_VERSION); true
+       flatpak install --arch=$(ARCH) $(ARGS) flathub org.freedesktop.Sdk.Locale $(FSDK_VERSION); true
+       flatpak install --arch=$(ARCH) $(ARGS) flathub org.freedesktop.Platform $(FSDK_VERSION); true
+       flatpak install --arch=$(ARCH) $(ARGS) flathub org.freedesktop.Sdk $(FSDK_VERSION); true
+       flatpak install --arch=$(ARCH) $(ARGS) flathub org.freedesktop.Sdk.Debug $(FSDK_VERSION); true
+       flatpak install --arch=$(ARCH) $(ARGS) flathub org.freedesktop.Sdk.Docs $(FSDK_VERSION); true

 check:
        json-glib-validate *.json