diff --git a/llvm/utils/gn/secondary/llvm/unittests/ADT/BUILD.gn b/llvm/utils/gn/secondary/llvm/unittests/ADT/BUILD.gn
index a6f75765dc5174..2ba7672776d836 100644
--- a/llvm/utils/gn/secondary/llvm/unittests/ADT/BUILD.gn
+++ b/llvm/utils/gn/secondary/llvm/unittests/ADT/BUILD.gn
@@ -70,6 +70,7 @@ unittest("ADTTests") {
     "STLForwardCompatTest.cpp",
     "ScopeExitTest.cpp",
     "SequenceTest.cpp",
+    "SetOperationsTest.cpp",
     "SetVectorTest.cpp",
     "SimpleIListTest.cpp",
     "SmallPtrSetTest.cpp",