diff --git a/Justfile b/Justfile
index 51314c2..de2e276 100755
--- a/Justfile
+++ b/Justfile
@@ -115,6 +115,10 @@ update-this-device rebuild-mode='switch':
 	template=nix/os/devices/$(hostname -s)/versions.tmpl.nix
 	outfile=nix/os/devices/$(hostname -s)/versions.nix
 
+	if ! test -e ${template}; then
+		template="$(just _DEFAULT_VERSION_TMPL)"
+	fi
+
 	esh -o ${outfile} ${template}
 	if ! test "$(git diff ${outfile})"; then
 		echo Already on latest versions