diff --git a/llvm/utils/gn/secondary/clang-tools-extra/clang-tidy/utils/BUILD.gn b/llvm/utils/gn/secondary/clang-tools-extra/clang-tidy/utils/BUILD.gn
index abb98917b333..ea5783ff566d 100644
--- a/llvm/utils/gn/secondary/clang-tools-extra/clang-tidy/utils/BUILD.gn
+++ b/llvm/utils/gn/secondary/clang-tools-extra/clang-tidy/utils/BUILD.gn
@@ -22,6 +22,7 @@ static_library("utils") {
     "LexerUtils.cpp",
     "NamespaceAliaser.cpp",
     "OptionsUtils.cpp",
+    "TransformerClangTidyCheck.cpp",
     "TypeTraits.cpp",
     "UsingInserter.cpp",
   ]
diff --git a/llvm/utils/gn/secondary/clang-tools-extra/unittests/clang-tidy/BUILD.gn b/llvm/utils/gn/secondary/clang-tools-extra/unittests/clang-tidy/BUILD.gn
index 5386513dcaaf..12ea944e3b25 100644
--- a/llvm/utils/gn/secondary/clang-tools-extra/unittests/clang-tidy/BUILD.gn
+++ b/llvm/utils/gn/secondary/clang-tools-extra/unittests/clang-tidy/BUILD.gn
@@ -31,6 +31,7 @@ unittest("ClangTidyTests") {
     "ObjCModuleTest.cpp",
     "OverlappingReplacementsTest.cpp",
     "ReadabilityModuleTest.cpp",
+    "TransformerClangTidyCheckTest.cpp",
     "UsingInserterTest.cpp",
   ]
 }