From 691ec1bf304a157ba02023a59eaf10f1fe8931e0 Mon Sep 17 00:00:00 2001
From: Jaepil Jeong <jaepil@cognica.io>
Date: Thu, 7 Dec 2023 12:11:01 +0900
Subject: [PATCH] Add missing header

---
 faiss/utils/WorkerThread.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/faiss/utils/WorkerThread.h b/faiss/utils/WorkerThread.h
index 72529be0a3..3f2377eba2 100644
--- a/faiss/utils/WorkerThread.h
+++ b/faiss/utils/WorkerThread.h
@@ -9,6 +9,7 @@
 
 #include <condition_variable>
 #include <deque>
+#include <functional>
 #include <future>
 #include <thread>