diff --git a/utils/bazel/llvm-project-overlay/.bazelignore b/utils/bazel/llvm-project-overlay/.bazelignore
--- a/utils/bazel/llvm-project-overlay/.bazelignore
+++ b/utils/bazel/llvm-project-overlay/.bazelignore
@@ -1,4 +1,5 @@
 # Ignore the utils/bazel directory when this is overlayed onto the repo root.
 utils/bazel
-# This directory has a Bazel config
-libcxx/utils/google-benchmark
+# Ignore third-party projects. These should be configured separately and some
+# include Bazel configs.
+third-party