diff --git a/Cargo.toml b/Cargo.toml
index cae48d795178..4e7839960644 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,4 +1,5 @@
 [workspace]
+default-members = ["src/bootstrap"]
 members = [
   "src/bootstrap",
   "compiler/rustc",