diff --git a/BUILD.gn b/BUILD.gn
index e71d98a..b950726 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -73,6 +73,7 @@
     "//third_party/abseil-cpp/absl/debugging:stacktrace",
     "//third_party/abseil-cpp/absl/debugging:symbolize",
     "//third_party/abseil-cpp/absl/functional:bind_front",
+    "//third_party/abseil-cpp/absl/functional:function_ref",
     "//third_party/abseil-cpp/absl/hash",
     "//third_party/abseil-cpp/absl/memory",
     "//third_party/abseil-cpp/absl/meta:type_traits",