diff --git a/tests/key-chain-fixture.cpp b/tests/key-chain-fixture.cpp
index e2d7a97..92518a3 100644
--- a/tests/key-chain-fixture.cpp
+++ b/tests/key-chain-fixture.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2013-2020 Regents of the University of California.
+ * Copyright (c) 2013-2021 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
@@ -23,7 +23,7 @@
 
 #include "ndn-cxx/util/io.hpp"
 
-#include <boost/filesystem.hpp>
+#include <boost/filesystem/operations.hpp>
 
 namespace ndn {
 namespace tests {