diff --git a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
index 335397c3f974a..4e7861d3a8b2b 100644
--- a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
+++ b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
@@ -128,6 +128,8 @@ if (current_toolchain == default_toolchain) {
       "__algorithm/ranges_copy_n.h",
       "__algorithm/ranges_count.h",
       "__algorithm/ranges_count_if.h",
+      "__algorithm/ranges_fill.h",
+      "__algorithm/ranges_fill_n.h",
       "__algorithm/ranges_find.h",
       "__algorithm/ranges_find_if.h",
       "__algorithm/ranges_find_if_not.h",