diff --git a/Cargo.toml b/Cargo.toml
index 874f5cb9680..89cf687a246 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -27,6 +27,8 @@ members = [
 exclude = [
   "src/tools/rls/test_data",
   "build",
+  # HACK(eddyb) This hardcodes the fact that our CI uses `/checkout/obj`.
+  "obj",
 ]
 
 # Curiously, LLVM 7.0 will segfault if compiled with opt-level=3