diff --git a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
index 5ffdf2c5790270..6aafed7c2cd03c 100644
--- a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
+++ b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
@@ -113,6 +113,7 @@ if (current_toolchain == default_toolchain) {
       "__algorithm/is_sorted.h",
       "__algorithm/is_sorted_until.h",
       "__algorithm/iter_swap.h",
+      "__algorithm/iterator_operations.h",
       "__algorithm/lexicographical_compare.h",
       "__algorithm/lower_bound.h",
       "__algorithm/make_heap.h",