diff --git a/tests/identity-management-fixture.cpp b/tests/identity-management-fixture.cpp
index 739725c..144cc76 100644
--- a/tests/identity-management-fixture.cpp
+++ b/tests/identity-management-fixture.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2013-2014 Regents of the University of California.
+ * Copyright (c) 2013-2015 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
diff --git a/tests/identity-management-fixture.hpp b/tests/identity-management-fixture.hpp
index 116309a..ae749f3 100644
--- a/tests/identity-management-fixture.hpp
+++ b/tests/identity-management-fixture.hpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2013-2014 Regents of the University of California.
+ * Copyright (c) 2013-2015 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
diff --git a/tests/integrated/test-faces.cpp b/tests/integrated/test-faces.cpp
index 05a2d6a..0cb34eb 100644
--- a/tests/integrated/test-faces.cpp
+++ b/tests/integrated/test-faces.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2013-2014 Regents of the University of California.
+ * Copyright (c) 2013-2015 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
diff --git a/tests/unit-tests/identity-management-time-fixture.cpp b/tests/unit-tests/identity-management-time-fixture.cpp
index 4033e30..ebf14a1 100644
--- a/tests/unit-tests/identity-management-time-fixture.cpp
+++ b/tests/unit-tests/identity-management-time-fixture.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2013-2014 Regents of the University of California.
+ * Copyright (c) 2013-2015 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
diff --git a/tests/unit-tests/identity-management-time-fixture.hpp b/tests/unit-tests/identity-management-time-fixture.hpp
index f6fdb3d..a161dd3 100644
--- a/tests/unit-tests/identity-management-time-fixture.hpp
+++ b/tests/unit-tests/identity-management-time-fixture.hpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2013-2014 Regents of the University of California.
+ * Copyright (c) 2013-2015 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
diff --git a/tests/unit-tests/ndebug.cpp b/tests/unit-tests/ndebug.cpp
index e3e4569..9063e64 100644
--- a/tests/unit-tests/ndebug.cpp
+++ b/tests/unit-tests/ndebug.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2013-2014 Regents of the University of California.
+ * Copyright (c) 2013-2015 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
diff --git a/tests/unit-tests/security/identity-fixture.cpp b/tests/unit-tests/security/identity-fixture.cpp
index 0e543bf..de67085 100644
--- a/tests/unit-tests/security/identity-fixture.cpp
+++ b/tests/unit-tests/security/identity-fixture.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2013-2014 Regents of the University of California.
+ * Copyright (c) 2013-2015 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
diff --git a/tests/unit-tests/security/test-sec-public-info-sqlite3.cpp b/tests/unit-tests/security/test-sec-public-info-sqlite3.cpp
index f7c4136..88b3ee7 100644
--- a/tests/unit-tests/security/test-sec-public-info-sqlite3.cpp
+++ b/tests/unit-tests/security/test-sec-public-info-sqlite3.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2013-2014 Regents of the University of California.
+ * Copyright (c) 2013-2015 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
diff --git a/tests/unit-tests/security/test-sec-tpm-file.cpp b/tests/unit-tests/security/test-sec-tpm-file.cpp
index 727d0d4..8b262ba 100644
--- a/tests/unit-tests/security/test-sec-tpm-file.cpp
+++ b/tests/unit-tests/security/test-sec-tpm-file.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2013-2014 Regents of the University of California.
+ * Copyright (c) 2013-2015 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
diff --git a/tests/unit-tests/security/test-sec-tpm-osx.cpp b/tests/unit-tests/security/test-sec-tpm-osx.cpp
index 7b31a1a..0fd1ba3 100644
--- a/tests/unit-tests/security/test-sec-tpm-osx.cpp
+++ b/tests/unit-tests/security/test-sec-tpm-osx.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2013-2014 Regents of the University of California.
+ * Copyright (c) 2013-2015 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
diff --git a/tests/unit-tests/security/test-validator-config.cpp b/tests/unit-tests/security/test-validator-config.cpp
index 8bac80c..b6a3102 100644
--- a/tests/unit-tests/security/test-validator-config.cpp
+++ b/tests/unit-tests/security/test-validator-config.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2013-2014 Regents of the University of California.
+ * Copyright (c) 2013-2015 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
diff --git a/tests/unit-tests/transport/test-unix-transport.cpp b/tests/unit-tests/transport/test-unix-transport.cpp
index bad7dc0..7bfebe9 100644
--- a/tests/unit-tests/transport/test-unix-transport.cpp
+++ b/tests/unit-tests/transport/test-unix-transport.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2013-2014 Regents of the University of California.
+ * Copyright (c) 2013-2015 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
diff --git a/tests/unit-tests/util/segment-fetcher.cpp b/tests/unit-tests/util/segment-fetcher.cpp
index d19e327..b0884eb 100644
--- a/tests/unit-tests/util/segment-fetcher.cpp
+++ b/tests/unit-tests/util/segment-fetcher.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2013-2014 Regents of the University of California.
+ * Copyright (c) 2013-2015 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
diff --git a/tests/unit-tests/util/signal.cpp b/tests/unit-tests/util/signal.cpp
index d168cf5..f538629 100644
--- a/tests/unit-tests/util/signal.cpp
+++ b/tests/unit-tests/util/signal.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2013-2014 Regents of the University of California.
+ * Copyright (c) 2013-2015 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
@@ -17,9 +17,6 @@
  * <http://www.gnu.org/licenses/>.
  *
  * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
- *
- * This code is actually copied from NFD project (NDN Forwarding Daemon).
- * We acknowledge the permission of the authors of NFD.
  */
 
 #include "util/signal.hpp"
diff --git a/tests/unit-tests/util/test-io.cpp b/tests/unit-tests/util/test-io.cpp
index b857a4a..0a3e422 100644
--- a/tests/unit-tests/util/test-io.cpp
+++ b/tests/unit-tests/util/test-io.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2013-2014 Regents of the University of California.
+ * Copyright (c) 2013-2015 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *