diff --git a/COPYING b/COPYING
index d05459a..817b13d 100644
--- a/COPYING
+++ b/COPYING
@@ -1,4 +1,4 @@
-This program is Copyright (C) 2018-2019 WireGuard LLC.
+This program is Copyright (C) 2018-2020 WireGuard LLC.
 ------------------------------------------------------------------------------
 
                     GNU GENERAL PUBLIC LICENSE
diff --git a/README.md b/README.md
index 77504be..32354ee 100644
--- a/README.md
+++ b/README.md
@@ -140,4 +140,4 @@ General requirements:
 
 ## License
 
-The entire contents of this repository, including all documentation code, is "Copyright © 2018-2019 WireGuard LLC. All Rights Reserved." and is licensed under the [GPLv2](COPYING).
+The entire contents of this repository, including all documentation code, is "Copyright © 2018-2020 WireGuard LLC. All Rights Reserved." and is licensed under the [GPLv2](COPYING).
diff --git a/undocumented.h b/undocumented.h
index cf85823..624174e 100644
--- a/undocumented.h
+++ b/undocumented.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0
  *
- * Copyright (C) 2018-2019 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2018-2020 WireGuard LLC. All Rights Reserved.
  */
 
 #pragma once
diff --git a/wintun.c b/wintun.c
index 55d6963..f170964 100644
--- a/wintun.c
+++ b/wintun.c
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0
  *
- * Copyright (C) 2018-2019 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2018-2020 WireGuard LLC. All Rights Reserved.
  */
 
 #include <ntifs.h>
diff --git a/wintun.inf b/wintun.inf
index ca7dd9b..6dd83a5 100644
--- a/wintun.inf
+++ b/wintun.inf
@@ -1,6 +1,6 @@
 ; SPDX-License-Identifier: GPL-2.0
 ;
-; Copyright (C) 2018-2019 WireGuard LLC. All Rights Reserved.
+; Copyright (C) 2018-2020 WireGuard LLC. All Rights Reserved.
 
 [Version]
 Signature = "$Windows NT$"
diff --git a/wintun.rc b/wintun.rc
index 7fff283..7abbcae 100644
--- a/wintun.rc
+++ b/wintun.rc
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0
  *
- * Copyright (C) 2018-2019 WireGuard LLC. All Rights Reserved.
+ * Copyright (C) 2018-2020 WireGuard LLC. All Rights Reserved.
  */
 
 #include <windows.h>
@@ -24,7 +24,7 @@ BEGIN
       VALUE "FileDescription", "Wintun Driver"
       VALUE "FileVersion", EXPAND(WINTUN_VERSION_STR)
       VALUE "InternalName", "wintun.sys"
-      VALUE "LegalCopyright", "Copyright \xa9 2018-2019 WireGuard LLC. All Rights Reserved."
+      VALUE "LegalCopyright", "Copyright \xa9 2018-2020 WireGuard LLC. All Rights Reserved."
       VALUE "OriginalFilename", "wintun.sys"
       VALUE "ProductName", "Wintun Driver"
       VALUE "ProductVersion", EXPAND(WINTUN_VERSION_STR)