diff --git a/liteeth/mac/common.py b/liteeth/mac/common.py
index 3a23f89..4d3dcb7 100644
--- a/liteeth/mac/common.py
+++ b/liteeth/mac/common.py
@@ -1,7 +1,7 @@
 #
 # This file is part of LiteEth.
 #
-# Copyright (c) 2015-2020 Florent Kermarrec <florent@enjoy-digital.fr>
+# Copyright (c) 2015-2021 Florent Kermarrec <florent@enjoy-digital.fr>
 # SPDX-License-Identifier: BSD-2-Clause
 
 from liteeth.common import *
diff --git a/liteeth/mac/core.py b/liteeth/mac/core.py
index b64942d..2677396 100644
--- a/liteeth/mac/core.py
+++ b/liteeth/mac/core.py
@@ -1,8 +1,9 @@
 #
 # This file is part of LiteEth.
 #
-# Copyright (c) 2015-2020 Florent Kermarrec <florent@enjoy-digital.fr>
+# Copyright (c) 2015-2021 Florent Kermarrec <florent@enjoy-digital.fr>
 # Copyright (c) 2015-2017 Sebastien Bourdeauducq <sb@m-labs.hk>
+# Copyright (c) 2021 David Sawatzke <d-git@sawatzke.dev>
 # Copyright (c) 2017-2018 whitequark <whitequark@whitequark.org>
 # SPDX-License-Identifier: BSD-2-Clause
 
diff --git a/liteeth/mac/crc.py b/liteeth/mac/crc.py
index dd7cb16..9da0e89 100644
--- a/liteeth/mac/crc.py
+++ b/liteeth/mac/crc.py
@@ -1,8 +1,9 @@
 #
 # This file is part of LiteEth.
 #
-# Copyright (c) 2015-2020 Florent Kermarrec <florent@enjoy-digital.fr>
+# Copyright (c) 2015-2021 Florent Kermarrec <florent@enjoy-digital.fr>
 # Copyright (c) 2015 Sebastien Bourdeauducq <sb@m-labs.hk>
+# Copyright (c) 2021 David Sawatzke <d-git@sawatzke.dev>
 # Copyright (c) 2017 whitequark <whitequark@whitequark.org>
 # Copyright (c) 2018 Felix Held <felix-github@felixheld.de>
 # SPDX-License-Identifier: BSD-2-Clause
diff --git a/liteeth/mac/gap.py b/liteeth/mac/gap.py
index cf5ad4d..2c853b9 100644
--- a/liteeth/mac/gap.py
+++ b/liteeth/mac/gap.py
@@ -1,7 +1,7 @@
 #
 # This file is part of LiteEth.
 #
-# Copyright (c) 2015-2020 Florent Kermarrec <florent@enjoy-digital.fr>
+# Copyright (c) 2015-2021 Florent Kermarrec <florent@enjoy-digital.fr>
 # Copyright (c) 2015-2017 Sebastien Bourdeauducq <sb@m-labs.hk>
 # Copyright (c) 2018 whitequark <whitequark@whitequark.org>
 # SPDX-License-Identifier: BSD-2-Clause
diff --git a/liteeth/mac/padding.py b/liteeth/mac/padding.py
index ac9f644..9ea37a0 100644
--- a/liteeth/mac/padding.py
+++ b/liteeth/mac/padding.py
@@ -1,7 +1,8 @@
 #
 # This file is part of LiteEth.
 #
-# Copyright (c) 2015-2020 Florent Kermarrec <florent@enjoy-digital.fr>
+# Copyright (c) 2015-2021 Florent Kermarrec <florent@enjoy-digital.fr>
+# Copyright (c) 2021 David Sawatzke <d-git@sawatzke.dev>
 # Copyright (c) 2015 Sebastien Bourdeauducq <sb@m-labs.hk>
 # Copyright (c) 2018 whitequark <whitequark@whitequark.org>
 # SPDX-License-Identifier: BSD-2-Clause
diff --git a/liteeth/mac/preamble.py b/liteeth/mac/preamble.py
index 85e5dc7..4a04e6f 100644
--- a/liteeth/mac/preamble.py
+++ b/liteeth/mac/preamble.py
@@ -1,7 +1,8 @@
 #
 # This file is part of LiteEth.
 #
-# Copyright (c) 2015-2020 Florent Kermarrec <florent@enjoy-digital.fr>
+# Copyright (c) 2015-2021 Florent Kermarrec <florent@enjoy-digital.fr>
+# Copyright (c) 2021 David Sawatzke <d-git@sawatzke.dev>
 # Copyright (c) 2015-2017 Sebastien Bourdeauducq <sb@m-labs.hk>
 # Copyright (c) 2017-2018 whitequark <whitequark@whitequark.org>
 # SPDX-License-Identifier: BSD-2-Clause
diff --git a/liteeth/mac/sram.py b/liteeth/mac/sram.py
index d19cae6..a8188ca 100644
--- a/liteeth/mac/sram.py
+++ b/liteeth/mac/sram.py
@@ -1,9 +1,9 @@
 #
 # This file is part of LiteEth.
 #
-# Copyright (c) 2021 Leon Schuermann <leon@is.currently.online>
-# Copyright (c) 2015-2020 Florent Kermarrec <florent@enjoy-digital.fr>
+# Copyright (c) 2015-2021 Florent Kermarrec <florent@enjoy-digital.fr>
 # Copyright (c) 2015-2018 Sebastien Bourdeauducq <sb@m-labs.hk>
+# Copyright (c) 2021 Leon Schuermann <leon@is.currently.online>
 # Copyright (c) 2017 whitequark <whitequark@whitequark.org>
 # SPDX-License-Identifier: BSD-2-Clause