diff --git a/doc/mrdocs.yml b/doc/mrdocs.yml
index ce7bc3b..fcaeac2 100644
--- a/doc/mrdocs.yml
+++ b/doc/mrdocs.yml
@@ -15,6 +15,7 @@ exclude-symbols:
   - 'boost::detail'
   - 'boost::detail::**'
   - 'boost::to_string_helper'
+  - 'boost::dynamic_bitset::bit_appender'
   - 'std'
   - 'std::**'
   #     Why does MrDocs pick up ::size_t?