diff --git a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
index f350303068a6e..8766740a9ce83 100644
--- a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
+++ b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
@@ -170,6 +170,7 @@ if (current_toolchain == default_toolchain) {
       "__algorithm/pstl_merge.h",
       "__algorithm/pstl_move.h",
       "__algorithm/pstl_replace.h",
+      "__algorithm/pstl_rotate_copy.h",
       "__algorithm/pstl_sort.h",
       "__algorithm/pstl_stable_sort.h",
       "__algorithm/pstl_transform.h",