diff --git a/llvm/utils/gn/secondary/clang-tools-extra/clangd/BUILD.gn b/llvm/utils/gn/secondary/clang-tools-extra/clangd/BUILD.gn
index e8ebbe818584..9faa1190ec9e 100644
--- a/llvm/utils/gn/secondary/clang-tools-extra/clangd/BUILD.gn
+++ b/llvm/utils/gn/secondary/clang-tools-extra/clangd/BUILD.gn
@@ -82,6 +82,7 @@ static_library("clangd") {
     "FSProvider.cpp",
     "FileDistance.cpp",
     "FindSymbols.cpp",
+    "Format.cpp",
     "FormattedString.cpp",
     "FuzzyMatch.cpp",
     "GlobalCompilationDatabase.cpp",
diff --git a/llvm/utils/gn/secondary/clang-tools-extra/clangd/unittests/BUILD.gn b/llvm/utils/gn/secondary/clang-tools-extra/clangd/unittests/BUILD.gn
index e9b5ded4b9f8..131bd00c424d 100644
--- a/llvm/utils/gn/secondary/clang-tools-extra/clangd/unittests/BUILD.gn
+++ b/llvm/utils/gn/secondary/clang-tools-extra/clangd/unittests/BUILD.gn
@@ -45,6 +45,7 @@ unittest("ClangdTests") {
     "FileDistanceTests.cpp",
     "FileIndexTests.cpp",
     "FindSymbolsTests.cpp",
+    "FormatTests.cpp",
     "FormattedStringTests.cpp",
     "FunctionTests.cpp",
     "FuzzyMatchTests.cpp",