diff --git a/utils/gn/secondary/llvm/unittests/Support/BUILD.gn b/utils/gn/secondary/llvm/unittests/Support/BUILD.gn
index 7dbe23e..1cb063d 100644
--- a/utils/gn/secondary/llvm/unittests/Support/BUILD.gn
+++ b/utils/gn/secondary/llvm/unittests/Support/BUILD.gn
@@ -61,6 +61,7 @@
     "ReplaceFileTest.cpp",
     "ReverseIterationTest.cpp",
     "ScaledNumberTest.cpp",
+    "SignalsTest.cpp",
     "SourceMgrTest.cpp",
     "SpecialCaseListTest.cpp",
     "StringPool.cpp",