diff --git a/include/hibf/misc/bit_vector.hpp b/include/hibf/misc/bit_vector.hpp
index 5e1dc253..5f57eae9 100644
--- a/include/hibf/misc/bit_vector.hpp
+++ b/include/hibf/misc/bit_vector.hpp
@@ -948,7 +948,10 @@ class bit_vector :
 #        if (_LIBCPP_VERSION < 200000)
             std::__compressed_pair<pointer, allocator_t> end_cap;
 #        else
+#            pragma GCC diagnostic push
+#            pragma GCC diagnostic ignored "-Wgnu-anonymous-struct" // Warning since clang-21
             _LIBCPP_COMPRESSED_PAIR(pointer, end_cap = nullptr, allocator_type, allocator);
+#            pragma GCC diagnostic pop
 #        endif
         };