diff --git a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
index 864aa375ca45b..807fd8d7392e5 100644
--- a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
+++ b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
@@ -92,6 +92,7 @@ copy("include") {
     "__string",
     "__support/android/locale_bionic.h",
     "__support/fuchsia/xlocale.h",
+    "__support/ibm/gettod_zos.h",
     "__support/ibm/limits.h",
     "__support/ibm/locale_mgmt_aix.h",
     "__support/ibm/nanosleep.h",