diff --git a/llvm/utils/gn/secondary/libcxx/src/BUILD.gn b/llvm/utils/gn/secondary/libcxx/src/BUILD.gn
index 330c280416f6d..50ffd388a0d0f 100644
--- a/llvm/utils/gn/secondary/libcxx/src/BUILD.gn
+++ b/llvm/utils/gn/secondary/libcxx/src/BUILD.gn
@@ -203,10 +203,16 @@ if (libcxx_enable_debug_mode) {
 }
 if (libcxx_enable_filesystem) {
   cxx_sources += [
+    "filesystem/directory_entry.cpp",
     "filesystem/directory_iterator.cpp",
-    "filesystem/filesystem_common.h",
+    "filesystem/file_descriptor.h",
+    "filesystem/filesystem_clock.cpp",
+    "filesystem/filesystem_error.cpp",
     "filesystem/operations.cpp",
+    "filesystem/path.cpp",
+    "filesystem/path_parser.h",
     "filesystem/posix_compat.h",
+    "filesystem/time_utils.h",
   ]
   if (libcxx_use_compiler_rt) {
     cxx_sources += [ "filesystem/int128_builtins.cpp" ]