diff --git a/tests/global-configuration.cpp b/tests/global-configuration.cpp
index e217098..d328d71 100644
--- a/tests/global-configuration.cpp
+++ b/tests/global-configuration.cpp
@@ -22,11 +22,10 @@
 
 #include <ndn-cxx/util/exception.hpp>
 
-#include <boost/filesystem/operations.hpp>
-#include <boost/filesystem/path.hpp>
-
+#include <filesystem>
 #include <stdexcept>
 #include <stdlib.h>
+#include <system_error>
 
 namespace ndncert::tests {
 
@@ -40,10 +39,10 @@
       m_home.assign(envHome);
 
     // in case an earlier test run crashed without a chance to run the destructor
-    boost::filesystem::remove_all(TESTDIR);
+    std::filesystem::remove_all(TESTDIR);
 
     auto testHome = TESTDIR / "test-home";
-    boost::filesystem::create_directories(testHome);
+    std::filesystem::create_directories(testHome);
 
     if (::setenv("HOME", testHome.c_str(), 1) != 0)
       NDN_THROW(std::runtime_error("setenv() failed"));
@@ -56,12 +55,12 @@
     else
       ::setenv("HOME", m_home.data(), 1);
 
-    boost::system::error_code ec;
-    boost::filesystem::remove_all(TESTDIR, ec); // ignore error
+    std::error_code ec;
+    std::filesystem::remove_all(TESTDIR, ec); // ignore error
   }
 
 private:
-  static inline const boost::filesystem::path TESTDIR{UNIT_TESTS_TMPDIR};
+  static inline const std::filesystem::path TESTDIR{UNIT_TESTS_TMPDIR};
   std::string m_home;
 };
 
diff --git a/tests/unit-tests/ca-sqlite.t.cpp b/tests/unit-tests/ca-sqlite.t.cpp
index 416c32c..80037ed 100644
--- a/tests/unit-tests/ca-sqlite.t.cpp
+++ b/tests/unit-tests/ca-sqlite.t.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2017-2022, Regents of the University of California.
+ * Copyright (c) 2017-2024, Regents of the University of California.
  *
  * This file is part of ndncert, a certificate management system based on NDN.
  *
@@ -23,8 +23,8 @@
 #include "tests/boost-test.hpp"
 #include "tests/key-chain-fixture.hpp"
 
-#include <boost/filesystem/operations.hpp>
-#include <boost/filesystem/path.hpp>
+#include <filesystem>
+#include <system_error>
 
 namespace ndncert::tests {
 
@@ -34,21 +34,19 @@
 {
 public:
   DatabaseFixture()
+    : dbDir(std::filesystem::path{UNIT_TESTS_TMPDIR} / "test-home" / ".ndncert")
   {
-    boost::filesystem::path parentDir{UNIT_TESTS_TMPDIR};
-    dbDir = parentDir / "test-home" / ".ndncert";
-    if (!boost::filesystem::exists(dbDir)) {
-      boost::filesystem::create_directory(dbDir);
-    }
+    std::filesystem::create_directory(dbDir);
   }
 
   ~DatabaseFixture()
   {
-    boost::filesystem::remove_all(dbDir);
+    std::error_code ec;
+    std::filesystem::remove_all(dbDir, ec); // ignore error
   }
 
 protected:
-  boost::filesystem::path dbDir;
+  std::filesystem::path dbDir;
 };
 
 BOOST_FIXTURE_TEST_SUITE(TestCaSqlite, DatabaseFixture)