diff --git a/tests/update/test-advertise-crash.cpp b/tests/update/test-advertise-crash.cpp
index 23f6e61..616429d 100644
--- a/tests/update/test-advertise-crash.cpp
+++ b/tests/update/test-advertise-crash.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2023,  The University of Memphis,
+ * Copyright (c) 2014-2024,  The University of Memphis,
  *                           Regents of the University of California,
  *                           Arizona Board of Regents.
  *
@@ -24,8 +24,7 @@
 #include "tests/io-key-chain-fixture.hpp"
 #include "tests/test-common.hpp"
 
-namespace nlsr {
-namespace test {
+namespace nlsr::tests {
 
 class AdvertiseCrashFixture : public IoKeyChainFixture
 {
@@ -96,5 +95,4 @@
 
 BOOST_AUTO_TEST_SUITE_END()
 
-} // namespace test
-} // namespace nlsr
+} // namespace nlsr::tests
diff --git a/tests/update/test-nfd-rib-command-processor.cpp b/tests/update/test-nfd-rib-command-processor.cpp
index b055275..17106dc 100644
--- a/tests/update/test-nfd-rib-command-processor.cpp
+++ b/tests/update/test-nfd-rib-command-processor.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2023,  The University of Memphis,
+ * Copyright (c) 2014-2024,  The University of Memphis,
  *                           Regents of the University of California,
  *                           Arizona Board of Regents.
  *
@@ -30,8 +30,7 @@
 #include <boost/lexical_cast.hpp>
 #include <boost/mp11/list.hpp>
 
-namespace nlsr {
-namespace test {
+namespace nlsr::tests {
 
 class NfdRibCommandProcessorFixture : public IoKeyChainFixture
 {
@@ -182,5 +181,4 @@
 
 BOOST_AUTO_TEST_SUITE_END()
 
-} // namespace test
-} // namespace nlsr
+} // namespace nlsr::tests
diff --git a/tests/update/test-prefix-update-processor.cpp b/tests/update/test-prefix-update-processor.cpp
index 79e2d90..493d73d 100644
--- a/tests/update/test-prefix-update-processor.cpp
+++ b/tests/update/test-prefix-update-processor.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2023,  The University of Memphis,
+ * Copyright (c) 2014-2024,  The University of Memphis,
  *                           Regents of the University of California,
  *                           Arizona Board of Regents.
  *
@@ -35,8 +35,7 @@
 #include <boost/property_tree/info_parser.hpp>
 #include <boost/property_tree/ptree.hpp>
 
-namespace nlsr {
-namespace test {
+namespace nlsr::tests {
 
 using namespace ndn;
 
@@ -200,5 +199,4 @@
 
 BOOST_AUTO_TEST_SUITE_END()
 
-} // namespace test
-} // namespace nlsr
+} // namespace nlsr::tests
diff --git a/tests/update/test-save-delete-prefix.cpp b/tests/update/test-save-delete-prefix.cpp
index 3e8ef3b..ef38cef 100644
--- a/tests/update/test-save-delete-prefix.cpp
+++ b/tests/update/test-save-delete-prefix.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2023,  The University of Memphis,
+ * Copyright (c) 2014-2024,  The University of Memphis,
  *                           Regents of the University of California,
  *                           Arizona Board of Regents.
  *
@@ -34,8 +34,7 @@
 #include <boost/filesystem/path.hpp>
 #include <boost/property_tree/info_parser.hpp>
 
-namespace nlsr {
-namespace test {
+namespace nlsr::tests {
 
 namespace bpt = boost::property_tree;
 
@@ -232,5 +231,4 @@
 
 BOOST_AUTO_TEST_SUITE_END()
 
-} // namespace test
-} // namespace nlsr
+} // namespace nlsr::tests