diff --git a/llvm/utils/gn/secondary/clang-tools-extra/clangd/refactor/tweaks/BUILD.gn b/llvm/utils/gn/secondary/clang-tools-extra/clangd/refactor/tweaks/BUILD.gn
index eb7cc23ae64c..313803d9250d 100644
--- a/llvm/utils/gn/secondary/clang-tools-extra/clangd/refactor/tweaks/BUILD.gn
+++ b/llvm/utils/gn/secondary/clang-tools-extra/clangd/refactor/tweaks/BUILD.gn
@@ -19,6 +19,7 @@ source_set("tweaks") {
     "ExtractFunction.cpp",
     "ExtractVariable.cpp",
     "RawStringLiteral.cpp",
+    "RemoveUsingNamespace.cpp",
     "SwapIfBranches.cpp",
   ]
 }