diff --git a/filenames.libcxx.gni b/filenames.libcxx.gni
index 9b728cc89f..5e05ee7228 100644
--- a/filenames.libcxx.gni
+++ b/filenames.libcxx.gni
@@ -263,6 +263,7 @@ libcxx_headers = [
   "//third_party/libc++/src/include/__chrono/gps_clock.h",
   "//third_party/libc++/src/include/__chrono/hh_mm_ss.h",
   "//third_party/libc++/src/include/__chrono/high_resolution_clock.h",
+  "//third_party/libc++/src/include/__chrono/is_clock.h",
   "//third_party/libc++/src/include/__chrono/leap_second.h",
   "//third_party/libc++/src/include/__chrono/literals.h",
   "//third_party/libc++/src/include/__chrono/local_info.h",
@@ -329,6 +330,8 @@ libcxx_headers = [
   "//third_party/libc++/src/include/__configuration/abi.h",
   "//third_party/libc++/src/include/__configuration/availability.h",
   "//third_party/libc++/src/include/__configuration/compiler.h",
+  "//third_party/libc++/src/include/__configuration/experimental.h",
+  "//third_party/libc++/src/include/__configuration/hardening.h",
   "//third_party/libc++/src/include/__configuration/language.h",
   "//third_party/libc++/src/include/__configuration/platform.h",
   "//third_party/libc++/src/include/__coroutine/coroutine_handle.h",
@@ -1361,7 +1364,6 @@ libcxx_headers = [
   "//third_party/libc++/src/include/__tuple/tuple_like.h",
   "//third_party/libc++/src/include/__tuple/tuple_like_no_subrange.h",
   "//third_party/libc++/src/include/__tuple/tuple_size.h",
-  "//third_party/libc++/src/include/__tuple/tuple_types.h",
   "//third_party/libc++/src/include/__type_traits/add_cv_quals.h",
   "//third_party/libc++/src/include/__type_traits/add_pointer.h",
   "//third_party/libc++/src/include/__type_traits/add_reference.h",
@@ -1396,7 +1398,6 @@ libcxx_headers = [
   "//third_party/libc++/src/include/__type_traits/is_array.h",
   "//third_party/libc++/src/include/__type_traits/is_assignable.h",
   "//third_party/libc++/src/include/__type_traits/is_base_of.h",
-  "//third_party/libc++/src/include/__type_traits/is_bounded_array.h",
   "//third_party/libc++/src/include/__type_traits/is_callable.h",
   "//third_party/libc++/src/include/__type_traits/is_char_like_type.h",
   "//third_party/libc++/src/include/__type_traits/is_class.h",
@@ -1433,7 +1434,6 @@ libcxx_headers = [
   "//third_party/libc++/src/include/__type_traits/is_reference.h",
   "//third_party/libc++/src/include/__type_traits/is_reference_wrapper.h",
   "//third_party/libc++/src/include/__type_traits/is_referenceable.h",
-  "//third_party/libc++/src/include/__type_traits/is_replaceable.h",
   "//third_party/libc++/src/include/__type_traits/is_same.h",
   "//third_party/libc++/src/include/__type_traits/is_scalar.h",
   "//third_party/libc++/src/include/__type_traits/is_signed.h",
@@ -1447,7 +1447,6 @@ libcxx_headers = [
   "//third_party/libc++/src/include/__type_traits/is_trivially_destructible.h",
   "//third_party/libc++/src/include/__type_traits/is_trivially_lexicographically_comparable.h",
   "//third_party/libc++/src/include/__type_traits/is_trivially_relocatable.h",
-  "//third_party/libc++/src/include/__type_traits/is_unbounded_array.h",
   "//third_party/libc++/src/include/__type_traits/is_union.h",
   "//third_party/libc++/src/include/__type_traits/is_unqualified.h",
   "//third_party/libc++/src/include/__type_traits/is_unsigned.h",
@@ -1642,7 +1641,6 @@ libcxx_headers = [
   "//third_party/libc++/src/include/sstream",
   "//third_party/libc++/src/include/stack",
   "//third_party/libc++/src/include/stdatomic.h",
-  "//third_party/libc++/src/include/stdbool.h",
   "//third_party/libc++/src/include/stddef.h",
   "//third_party/libc++/src/include/stdexcept",
   "//third_party/libc++/src/include/stdio.h",