diff --git a/artiq/firmware/Cargo.toml b/artiq/firmware/Cargo.toml
new file mode 100644
index 000000000..58aec9c96
--- /dev/null
+++ b/artiq/firmware/Cargo.toml
@@ -0,0 +1,2 @@
+[workspace]
+members = ["runtime", "libksupport"]