diff --git a/src/miner.cpp b/src/miner.cpp
index 011c16155d..53421c976f 100644
--- a/src/miner.cpp
+++ b/src/miner.cpp
@@ -1,7 +1,7 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
 // Copyright (c) 2009-2017 The Bitcoin Core developers
 // Copyright (c) 2018 The Bitcoin ABC developers
-// Copyright (c) 2018 The Unit-e developers
+// Copyright (c) 2018-2019 The Unit-e developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/test/uint256_tests.cpp b/src/test/uint256_tests.cpp
index e740ea8c93..f3e3b7cebd 100644
--- a/src/test/uint256_tests.cpp
+++ b/src/test/uint256_tests.cpp
@@ -1,4 +1,6 @@
 // Copyright (c) 2011-2017 The Bitcoin Core developers
+// Copyright (c) 2018 The Bitcoin ABC developers
+// Copyright (c) 2019 The Unit-e developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 #include <arith_uint256.h>
diff --git a/src/uint256.h b/src/uint256.h
index 9c1eee49f4..4a55ddbbc8 100644
--- a/src/uint256.h
+++ b/src/uint256.h
@@ -1,5 +1,7 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
 // Copyright (c) 2009-2017 The Bitcoin Core developers
+// Copyright (c) 2018 The Bitcoin ABC developers
+// Copyright (c) 2018-2019 The Unit-e developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
diff --git a/src/validation.cpp b/src/validation.cpp
index 4f4f59150e..2992b982d2 100644
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -1,5 +1,7 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
 // Copyright (c) 2009-2017 The Bitcoin Core developers
+// Copyright (c) 2018 The Bitcoin ABC developers
+// Copyright (c) 2018-2019 The Unit-e developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.