diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..0a74905
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+# Cargo.toml
+#
+# Workspace manifest for the Noctua project.
+
+[workspace]
+members = ["core", "ui"]
+resolver = "2"