Link to clang-tidy lint tracking issue
diff --git a/.clang-tidy b/.clang-tidy
index b917995..f4a9d42 100644
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -1,4 +1,6 @@
 Checks:
+  # TODO: many of these need to be resolved.
+  # https://github.com/dtolnay/cxx/issues/500
   clang-analyzer-*,
   clang-diagnostic-*,
   cppcoreguidelines-*,