diff --git a/utils/gn/secondary/libcxx/include/BUILD.gn b/utils/gn/secondary/libcxx/include/BUILD.gn
index f9707c3485e..778cfab300f 100644
--- a/utils/gn/secondary/libcxx/include/BUILD.gn
+++ b/utils/gn/secondary/libcxx/include/BUILD.gn
@@ -68,6 +68,7 @@ if (current_toolchain == default_toolchain) {
       "__debug",
       "__errc",
       "__format/format_error.h",
+      "__format/format_parse_context.h",
       "__function_like.h",
       "__functional_03",
       "__functional_base",