diff --git a/filenames.libcxx.gni b/filenames.libcxx.gni
index 3437fdf91f..992f8b69c6 100644
--- a/filenames.libcxx.gni
+++ b/filenames.libcxx.gni
@@ -271,6 +271,10 @@ libcxx_headers = [
   "//buildtools/third_party/libc++/trunk/include/__debug",
   "//buildtools/third_party/libc++/trunk/include/__debug_utils/randomize_range.h",
   "//buildtools/third_party/libc++/trunk/include/__errc",
+  "//buildtools/third_party/libc++/trunk/include/__expected/bad_expected_access.h",
+  "//buildtools/third_party/libc++/trunk/include/__expected/expected.h",
+  "//buildtools/third_party/libc++/trunk/include/__expected/unexpect.h",
+  "//buildtools/third_party/libc++/trunk/include/__expected/unexpected.h",
   "//buildtools/third_party/libc++/trunk/include/__filesystem/copy_options.h",
   "//buildtools/third_party/libc++/trunk/include/__filesystem/directory_entry.h",
   "//buildtools/third_party/libc++/trunk/include/__filesystem/directory_iterator.h",
@@ -290,6 +294,7 @@ libcxx_headers = [
   "//buildtools/third_party/libc++/trunk/include/__format/buffer.h",
   "//buildtools/third_party/libc++/trunk/include/__format/concepts.h",
   "//buildtools/third_party/libc++/trunk/include/__format/enable_insertable.h",
+  "//buildtools/third_party/libc++/trunk/include/__format/escaped_output_table.h",
   "//buildtools/third_party/libc++/trunk/include/__format/extended_grapheme_cluster_table.h",
   "//buildtools/third_party/libc++/trunk/include/__format/format_arg.h",
   "//buildtools/third_party/libc++/trunk/include/__format/format_arg_store.h",
@@ -311,6 +316,7 @@ libcxx_headers = [
   "//buildtools/third_party/libc++/trunk/include/__format/formatter_pointer.h",
   "//buildtools/third_party/libc++/trunk/include/__format/formatter_string.h",
   "//buildtools/third_party/libc++/trunk/include/__format/parser_std_format_spec.h",
+  "//buildtools/third_party/libc++/trunk/include/__format/range_default_formatter.h",
   "//buildtools/third_party/libc++/trunk/include/__format/unicode.h",
   "//buildtools/third_party/libc++/trunk/include/__functional/binary_function.h",
   "//buildtools/third_party/libc++/trunk/include/__functional/binary_negate.h",
@@ -343,8 +349,10 @@ libcxx_headers = [
   "//buildtools/third_party/libc++/trunk/include/__fwd/array.h",
   "//buildtools/third_party/libc++/trunk/include/__fwd/get.h",
   "//buildtools/third_party/libc++/trunk/include/__fwd/hash.h",
+  "//buildtools/third_party/libc++/trunk/include/__fwd/memory_resource.h",
   "//buildtools/third_party/libc++/trunk/include/__fwd/pair.h",
   "//buildtools/third_party/libc++/trunk/include/__fwd/span.h",
+  "//buildtools/third_party/libc++/trunk/include/__fwd/string.h",
   "//buildtools/third_party/libc++/trunk/include/__fwd/string_view.h",
   "//buildtools/third_party/libc++/trunk/include/__fwd/tuple.h",
   "//buildtools/third_party/libc++/trunk/include/__hash_table",
@@ -395,6 +403,7 @@ libcxx_headers = [
   "//buildtools/third_party/libc++/trunk/include/__memory/allocation_guard.h",
   "//buildtools/third_party/libc++/trunk/include/__memory/allocator.h",
   "//buildtools/third_party/libc++/trunk/include/__memory/allocator_arg_t.h",
+  "//buildtools/third_party/libc++/trunk/include/__memory/allocator_destructor.h",
   "//buildtools/third_party/libc++/trunk/include/__memory/allocator_traits.h",
   "//buildtools/third_party/libc++/trunk/include/__memory/assume_aligned.h",
   "//buildtools/third_party/libc++/trunk/include/__memory/auto_ptr.h",
@@ -414,7 +423,14 @@ libcxx_headers = [
   "//buildtools/third_party/libc++/trunk/include/__memory/uninitialized_algorithms.h",
   "//buildtools/third_party/libc++/trunk/include/__memory/unique_ptr.h",
   "//buildtools/third_party/libc++/trunk/include/__memory/uses_allocator.h",
+  "//buildtools/third_party/libc++/trunk/include/__memory/uses_allocator_construction.h",
   "//buildtools/third_party/libc++/trunk/include/__memory/voidify.h",
+  "//buildtools/third_party/libc++/trunk/include/__memory_resource/memory_resource.h",
+  "//buildtools/third_party/libc++/trunk/include/__memory_resource/monotonic_buffer_resource.h",
+  "//buildtools/third_party/libc++/trunk/include/__memory_resource/polymorphic_allocator.h",
+  "//buildtools/third_party/libc++/trunk/include/__memory_resource/pool_options.h",
+  "//buildtools/third_party/libc++/trunk/include/__memory_resource/synchronized_pool_resource.h",
+  "//buildtools/third_party/libc++/trunk/include/__memory_resource/unsynchronized_pool_resource.h",
   "//buildtools/third_party/libc++/trunk/include/__mutex_base",
   "//buildtools/third_party/libc++/trunk/include/__node_handle",
   "//buildtools/third_party/libc++/trunk/include/__numeric/accumulate.h",
@@ -476,12 +492,14 @@ libcxx_headers = [
   "//buildtools/third_party/libc++/trunk/include/__ranges/dangling.h",
   "//buildtools/third_party/libc++/trunk/include/__ranges/data.h",
   "//buildtools/third_party/libc++/trunk/include/__ranges/drop_view.h",
+  "//buildtools/third_party/libc++/trunk/include/__ranges/drop_while_view.h",
   "//buildtools/third_party/libc++/trunk/include/__ranges/empty.h",
   "//buildtools/third_party/libc++/trunk/include/__ranges/empty_view.h",
   "//buildtools/third_party/libc++/trunk/include/__ranges/enable_borrowed_range.h",
   "//buildtools/third_party/libc++/trunk/include/__ranges/enable_view.h",
   "//buildtools/third_party/libc++/trunk/include/__ranges/filter_view.h",
   "//buildtools/third_party/libc++/trunk/include/__ranges/iota_view.h",
+  "//buildtools/third_party/libc++/trunk/include/__ranges/istream_view.h",
   "//buildtools/third_party/libc++/trunk/include/__ranges/join_view.h",
   "//buildtools/third_party/libc++/trunk/include/__ranges/lazy_split_view.h",
   "//buildtools/third_party/libc++/trunk/include/__ranges/non_propagating_cache.h",
@@ -495,6 +513,7 @@ libcxx_headers = [
   "//buildtools/third_party/libc++/trunk/include/__ranges/size.h",
   "//buildtools/third_party/libc++/trunk/include/__ranges/subrange.h",
   "//buildtools/third_party/libc++/trunk/include/__ranges/take_view.h",
+  "//buildtools/third_party/libc++/trunk/include/__ranges/take_while_view.h",
   "//buildtools/third_party/libc++/trunk/include/__ranges/transform_view.h",
   "//buildtools/third_party/libc++/trunk/include/__ranges/view_interface.h",
   "//buildtools/third_party/libc++/trunk/include/__ranges/views.h",
@@ -614,6 +633,7 @@ libcxx_headers = [
   "//buildtools/third_party/libc++/trunk/include/__type_traits/is_scoped_enum.h",
   "//buildtools/third_party/libc++/trunk/include/__type_traits/is_signed.h",
   "//buildtools/third_party/libc++/trunk/include/__type_traits/is_signed_integer.h",
+  "//buildtools/third_party/libc++/trunk/include/__type_traits/is_specialization.h",
   "//buildtools/third_party/libc++/trunk/include/__type_traits/is_standard_layout.h",
   "//buildtools/third_party/libc++/trunk/include/__type_traits/is_swappable.h",
   "//buildtools/third_party/libc++/trunk/include/__type_traits/is_trivial.h",
@@ -654,6 +674,7 @@ libcxx_headers = [
   "//buildtools/third_party/libc++/trunk/include/__type_traits/remove_reference.h",
   "//buildtools/third_party/libc++/trunk/include/__type_traits/remove_volatile.h",
   "//buildtools/third_party/libc++/trunk/include/__type_traits/result_of.h",
+  "//buildtools/third_party/libc++/trunk/include/__type_traits/strip_signature.h",
   "//buildtools/third_party/libc++/trunk/include/__type_traits/type_identity.h",
   "//buildtools/third_party/libc++/trunk/include/__type_traits/type_list.h",
   "//buildtools/third_party/libc++/trunk/include/__type_traits/underlying_type.h",
@@ -726,6 +747,7 @@ libcxx_headers = [
   "//buildtools/third_party/libc++/trunk/include/errno.h",
   "//buildtools/third_party/libc++/trunk/include/exception",
   "//buildtools/third_party/libc++/trunk/include/execution",
+  "//buildtools/third_party/libc++/trunk/include/expected",
   "//buildtools/third_party/libc++/trunk/include/experimental/__config",
   "//buildtools/third_party/libc++/trunk/include/experimental/__memory",
   "//buildtools/third_party/libc++/trunk/include/experimental/algorithm",
@@ -767,6 +789,7 @@ libcxx_headers = [
   "//buildtools/third_party/libc++/trunk/include/istream",
   "//buildtools/third_party/libc++/trunk/include/iterator",
   "//buildtools/third_party/libc++/trunk/include/latch",
+  "//buildtools/third_party/libc++/trunk/include/libcxx.imp",
   "//buildtools/third_party/libc++/trunk/include/limits",
   "//buildtools/third_party/libc++/trunk/include/limits.h",
   "//buildtools/third_party/libc++/trunk/include/list",
@@ -775,6 +798,7 @@ libcxx_headers = [
   "//buildtools/third_party/libc++/trunk/include/map",
   "//buildtools/third_party/libc++/trunk/include/math.h",
   "//buildtools/third_party/libc++/trunk/include/memory",
+  "//buildtools/third_party/libc++/trunk/include/memory_resource",
   "//buildtools/third_party/libc++/trunk/include/module.modulemap.in",
   "//buildtools/third_party/libc++/trunk/include/mutex",
   "//buildtools/third_party/libc++/trunk/include/new",
diff --git a/package.json b/package.json
index 786172fd79..8ccdee44cf 100644
--- a/package.json
+++ b/package.json
@@ -143,7 +143,8 @@
       "ts-node script/check-patch-diff.ts"
     ],
     "DEPS": [
-      "node script/gen-hunspell-filenames.js"
+      "node script/gen-hunspell-filenames.js",
+      "node script/gen-libc++-filenames.js"
     ]
   },
   "resolutions": {