diff --git a/release/packages/ucl/toolchain.ucl b/release/packages/ucl/toolchain.ucl
new file mode 100644
--- /dev/null
+++ b/release/packages/ucl/toolchain.ucl
@@ -0,0 +1,7 @@
+deps {
+	# e.g., lorder(1) requires nm(1)
+	"clang": {
+		version = "${VERSION}"
+		origin = "base"
+	}
+}