diff --git a/contrib/dns-hatchet/apply.sh b/contrib/dns-hatchet/apply.sh
index 44e5980..d98e4c8 100755
--- a/contrib/dns-hatchet/apply.sh
+++ b/contrib/dns-hatchet/apply.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 #
-# Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+# Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
 
 ME="$(readlink -f "$(dirname "$(readlink -f "$0")")")"
 TOOLS="$ME/../../src"
diff --git a/contrib/embeddable-wg-library/test.c b/contrib/embeddable-wg-library/test.c
index 25fc9ea..4c95373 100644
--- a/contrib/embeddable-wg-library/test.c
+++ b/contrib/embeddable-wg-library/test.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: LGPL-2.1+
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #include "wireguard.h"
diff --git a/contrib/embeddable-wg-library/wireguard.c b/contrib/embeddable-wg-library/wireguard.c
index 54b8700..fd68918 100644
--- a/contrib/embeddable-wg-library/wireguard.c
+++ b/contrib/embeddable-wg-library/wireguard.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: LGPL-2.1+
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  * Copyright (C) 2008-2012 Pablo Neira Ayuso <pablo@netfilter.org>.
  */
 
diff --git a/contrib/embeddable-wg-library/wireguard.h b/contrib/embeddable-wg-library/wireguard.h
index e7a1bbf..fbd8765 100644
--- a/contrib/embeddable-wg-library/wireguard.h
+++ b/contrib/embeddable-wg-library/wireguard.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: LGPL-2.1+ */
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #ifndef WIREGUARD_H
diff --git a/contrib/external-tests/go/main.go b/contrib/external-tests/go/main.go
index 0f8deda..a52f16e 100644
--- a/contrib/external-tests/go/main.go
+++ b/contrib/external-tests/go/main.go
@@ -1,4 +1,4 @@
-/* Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. */
+/* Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. */
 
 package main
 
diff --git a/contrib/external-tests/rust/src/main.rs b/contrib/external-tests/rust/src/main.rs
index 9fb78f2..4b6ebcc 100644
--- a/contrib/external-tests/rust/src/main.rs
+++ b/contrib/external-tests/rust/src/main.rs
@@ -1,4 +1,4 @@
-/* Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. */
+/* Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. */
 
 extern crate snow;
 extern crate base64;
diff --git a/contrib/extract-handshakes/extract-handshakes.sh b/contrib/extract-handshakes/extract-handshakes.sh
index f794ffe..688f4e4 100755
--- a/contrib/extract-handshakes/extract-handshakes.sh
+++ b/contrib/extract-handshakes/extract-handshakes.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 #
-# Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+# Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
 # Copyright (C) 2017-2018 Peter Wu <peter@lekensteyn.nl>. All Rights Reserved.
 
 set -e
diff --git a/contrib/extract-handshakes/offset-finder.c b/contrib/extract-handshakes/offset-finder.c
index ecde5ac..1b54cf3 100644
--- a/contrib/extract-handshakes/offset-finder.c
+++ b/contrib/extract-handshakes/offset-finder.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 struct def {
diff --git a/contrib/extract-keys/config.c b/contrib/extract-keys/config.c
index 09252a2..640c61b 100644
--- a/contrib/extract-keys/config.c
+++ b/contrib/extract-keys/config.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 struct def {
diff --git a/contrib/extract-keys/extract-keys.c b/contrib/extract-keys/extract-keys.c
index 1906be6..3d05f7c 100644
--- a/contrib/extract-keys/extract-keys.c
+++ b/contrib/extract-keys/extract-keys.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #include <endian.h>
diff --git a/contrib/highlighter/fuzz.c b/contrib/highlighter/fuzz.c
index e308157..eaade6b 100644
--- a/contrib/highlighter/fuzz.c
+++ b/contrib/highlighter/fuzz.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #include <stdlib.h>
diff --git a/contrib/highlighter/highlight.c b/contrib/highlighter/highlight.c
index b03f792..e9034f7 100644
--- a/contrib/highlighter/highlight.c
+++ b/contrib/highlighter/highlight.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #include <stdio.h>
diff --git a/contrib/highlighter/highlighter.c b/contrib/highlighter/highlighter.c
index 1913e35..9f0e53a 100644
--- a/contrib/highlighter/highlighter.c
+++ b/contrib/highlighter/highlighter.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #include <stdbool.h>
diff --git a/contrib/highlighter/highlighter.h b/contrib/highlighter/highlighter.h
index c004e12..65cc230 100644
--- a/contrib/highlighter/highlighter.h
+++ b/contrib/highlighter/highlighter.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #include <sys/types.h>
diff --git a/contrib/json/wg-json b/contrib/json/wg-json
index 8b35521..c763c54 100755
--- a/contrib/json/wg-json
+++ b/contrib/json/wg-json
@@ -1,7 +1,7 @@
 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 #
-# Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+# Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
 
 exec < <(exec wg show all dump)
 
diff --git a/contrib/keygen-html/keygen.html b/contrib/keygen-html/keygen.html
index 939e637..fd5b02b 100644
--- a/contrib/keygen-html/keygen.html
+++ b/contrib/keygen-html/keygen.html
@@ -2,7 +2,7 @@
 <script>
 /* SPDX-License-Identifier: GPL-2.0
  *
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 function sendPubkeyToServer(pubkey, username, password)
diff --git a/contrib/keygen-html/wireguard.js b/contrib/keygen-html/wireguard.js
index e262459..2349ca2 100644
--- a/contrib/keygen-html/wireguard.js
+++ b/contrib/keygen-html/wireguard.js
@@ -1,6 +1,6 @@
 /*! SPDX-License-Identifier: GPL-2.0
  *
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 (function() {
diff --git a/contrib/nat-hole-punching/nat-punch-client.c b/contrib/nat-hole-punching/nat-punch-client.c
index 01bb096..7e53b67 100644
--- a/contrib/nat-hole-punching/nat-punch-client.c
+++ b/contrib/nat-hole-punching/nat-punch-client.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  *
  * Example only. Do not run in production.
  */
diff --git a/contrib/nat-hole-punching/nat-punch-server.c b/contrib/nat-hole-punching/nat-punch-server.c
index a6a5a4c..428fd6d 100644
--- a/contrib/nat-hole-punching/nat-punch-server.c
+++ b/contrib/nat-hole-punching/nat-punch-server.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  *
  * Example only. Do not run in production.
  */
diff --git a/contrib/ncat-client-server/client-quick.sh b/contrib/ncat-client-server/client-quick.sh
index bf7d7f1..971f3ec 100755
--- a/contrib/ncat-client-server/client-quick.sh
+++ b/contrib/ncat-client-server/client-quick.sh
@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 # SPDX-License-Identifier: GPL-2.0
 #
-# Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+# Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
 
 set -e
 
diff --git a/contrib/ncat-client-server/client.sh b/contrib/ncat-client-server/client.sh
index dd0f575..8df29ab 100755
--- a/contrib/ncat-client-server/client.sh
+++ b/contrib/ncat-client-server/client.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 #
-# Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+# Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
 
 set -e
 [[ $UID == 0 ]] || { echo "You must be root to run this."; exit 1; }
diff --git a/contrib/ncat-client-server/server.sh b/contrib/ncat-client-server/server.sh
index 38a69e1..926661e 100755
--- a/contrib/ncat-client-server/server.sh
+++ b/contrib/ncat-client-server/server.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 #
-# Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+# Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
 
 if [[ -z $NCAT_REMOTE_ADDR ]]; then
 	ip link del dev wg0 2>/dev/null
diff --git a/contrib/reresolve-dns/reresolve-dns.sh b/contrib/reresolve-dns/reresolve-dns.sh
index 8ab3635..fd38cd4 100755
--- a/contrib/reresolve-dns/reresolve-dns.sh
+++ b/contrib/reresolve-dns/reresolve-dns.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 #
-# Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+# Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
 
 set -e
 shopt -s nocasematch
diff --git a/contrib/sticky-sockets/sticky-sockets.c b/contrib/sticky-sockets/sticky-sockets.c
index d856ef2..d9a11ad 100644
--- a/contrib/sticky-sockets/sticky-sockets.c
+++ b/contrib/sticky-sockets/sticky-sockets.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  *
  * This implements userspace semantics of "sticky sockets", modeled after
  * WireGuard's kernelspace implementation.
diff --git a/contrib/synergy/synergy-client.sh b/contrib/synergy/synergy-client.sh
index de358ef..d1dfcbd 100755
--- a/contrib/synergy/synergy-client.sh
+++ b/contrib/synergy/synergy-client.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 #
-# Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+# Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
 
 set -ex
 if [[ $UID == 0 ]]; then
diff --git a/contrib/synergy/synergy-server.sh b/contrib/synergy/synergy-server.sh
index e04b1f4..b8a7158 100755
--- a/contrib/synergy/synergy-server.sh
+++ b/contrib/synergy/synergy-server.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 #
-# Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+# Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
 
 set -ex
 if [[ $UID == 0 ]]; then
diff --git a/src/Makefile b/src/Makefile
index 049d555..dc7452d 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1,6 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 #
-# Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+# Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
 
 PKG_CONFIG ?= pkg-config
 PREFIX ?= /usr
diff --git a/src/completion/wg-quick.bash-completion b/src/completion/wg-quick.bash-completion
index 1ec98d9..f8973cd 100644
--- a/src/completion/wg-quick.bash-completion
+++ b/src/completion/wg-quick.bash-completion
@@ -1,5 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
-# Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+# Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
 
 _wg_quick_completion() {
 	local p i a search_paths old_glob
diff --git a/src/completion/wg.bash-completion b/src/completion/wg.bash-completion
index cc6ac06..445f0e8 100644
--- a/src/completion/wg.bash-completion
+++ b/src/completion/wg.bash-completion
@@ -1,5 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
-# Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+# Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
 
 _wg_completion() {
 	local a
diff --git a/src/config.c b/src/config.c
index db90228..b8394a5 100644
--- a/src/config.c
+++ b/src/config.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #include <arpa/inet.h>
diff --git a/src/config.h b/src/config.h
index 9c31e8c..8bbe236 100644
--- a/src/config.h
+++ b/src/config.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #ifndef CONFIG_H
diff --git a/src/containers.h b/src/containers.h
index b312c72..2ffc230 100644
--- a/src/containers.h
+++ b/src/containers.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #ifndef CONTAINERS_H
diff --git a/src/curve25519-fiat32.h b/src/curve25519-fiat32.h
index 42cfb6c..66f3309 100644
--- a/src/curve25519-fiat32.h
+++ b/src/curve25519-fiat32.h
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0 OR MIT
 /*
  * Copyright (C) 2015-2016 The fiat-crypto Authors.
- * Copyright (C) 2018-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2018-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  *
  * This is a machine-generated formally verified implementation of Curve25519
  * ECDH from: <https://github.com/mit-plv/fiat-crypto>. Though originally
diff --git a/src/curve25519-hacl64.h b/src/curve25519-hacl64.h
index 0f729ec..1fba1f5 100644
--- a/src/curve25519-hacl64.h
+++ b/src/curve25519-hacl64.h
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0 OR MIT
 /*
  * Copyright (C) 2016-2017 INRIA and Microsoft Corporation.
- * Copyright (C) 2018-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2018-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  *
  * This is a machine-generated formally verified implementation of Curve25519
  * ECDH from: <https://github.com/mitls/hacl-star>. Though originally machine
diff --git a/src/curve25519.c b/src/curve25519.c
index f1b6358..7d3fd15 100644
--- a/src/curve25519.c
+++ b/src/curve25519.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2018-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2018-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #include "curve25519.h"
diff --git a/src/curve25519.h b/src/curve25519.h
index c047019..1569824 100644
--- a/src/curve25519.h
+++ b/src/curve25519.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #ifndef CURVE25519_H
diff --git a/src/encoding.c b/src/encoding.c
index af2fc82..2540e5b 100644
--- a/src/encoding.c
+++ b/src/encoding.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  *
  * This is a specialized constant-time base64/hex implementation that resists side-channel attacks.
  */
diff --git a/src/encoding.h b/src/encoding.h
index f977ee9..2d2c1e0 100644
--- a/src/encoding.h
+++ b/src/encoding.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #ifndef ENCODING_H
diff --git a/src/fuzz/Makefile b/src/fuzz/Makefile
index 0e7ddb5..98a16dd 100644
--- a/src/fuzz/Makefile
+++ b/src/fuzz/Makefile
@@ -1,6 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 #
-# Copyright (C) 2018-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+# Copyright (C) 2018-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
 
 all: config uapi
 
diff --git a/src/fuzz/config.c b/src/fuzz/config.c
index 4877ba7..49c87b4 100644
--- a/src/fuzz/config.c
+++ b/src/fuzz/config.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2018-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2018-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #include <stdio.h>
diff --git a/src/fuzz/uapi.c b/src/fuzz/uapi.c
index 3094f1c..90b2ba6 100644
--- a/src/fuzz/uapi.c
+++ b/src/fuzz/uapi.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2018-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2018-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #include <stdio.h>
diff --git a/src/genkey.c b/src/genkey.c
index b9c2a86..d1bb643 100644
--- a/src/genkey.c
+++ b/src/genkey.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #include <errno.h>
diff --git a/src/ipc.c b/src/ipc.c
index 64d8b20..9833b33 100644
--- a/src/ipc.c
+++ b/src/ipc.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #ifdef __linux__
diff --git a/src/ipc.h b/src/ipc.h
index 6c564be..c51c8e7 100644
--- a/src/ipc.h
+++ b/src/ipc.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #ifndef IPC_H
diff --git a/src/mnlg.c b/src/mnlg.c
index 173e366..0651896 100644
--- a/src/mnlg.c
+++ b/src/mnlg.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  *
  * Original author: Jiri Pirko <jiri@mellanox.com>
  */
diff --git a/src/mnlg.h b/src/mnlg.h
index b5adbbc..8585491 100644
--- a/src/mnlg.h
+++ b/src/mnlg.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  *
  * Original author: Jiri Pirko <jiri@mellanox.com>
  */
diff --git a/src/pubkey.c b/src/pubkey.c
index cbf1744..19235fc 100644
--- a/src/pubkey.c
+++ b/src/pubkey.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #include <errno.h>
diff --git a/src/set.c b/src/set.c
index 19f4b92..0a98f7b 100644
--- a/src/set.c
+++ b/src/set.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #include <stdio.h>
diff --git a/src/setconf.c b/src/setconf.c
index f778f40..89b3023 100644
--- a/src/setconf.c
+++ b/src/setconf.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #include <stddef.h>
diff --git a/src/show.c b/src/show.c
index ff0897d..e772339 100644
--- a/src/show.c
+++ b/src/show.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #include <arpa/inet.h>
diff --git a/src/showconf.c b/src/showconf.c
index ad76b7f..6e6a4a5 100644
--- a/src/showconf.c
+++ b/src/showconf.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #include <arpa/inet.h>
diff --git a/src/subcommands.h b/src/subcommands.h
index afac10a..68e9334 100644
--- a/src/subcommands.h
+++ b/src/subcommands.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #ifndef SUBCOMMANDS_H
diff --git a/src/terminal.c b/src/terminal.c
index 899d6ca..ba88597 100644
--- a/src/terminal.c
+++ b/src/terminal.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #include <ctype.h>
diff --git a/src/terminal.h b/src/terminal.h
index a824ad7..e8cb570 100644
--- a/src/terminal.h
+++ b/src/terminal.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #ifndef TERMINAL_H
diff --git a/src/uapi/linux/wireguard.h b/src/uapi/linux/wireguard.h
index ae88be1..0efd52c 100644
--- a/src/uapi/linux/wireguard.h
+++ b/src/uapi/linux/wireguard.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) OR MIT */
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  *
  * Documentation
  * =============
diff --git a/src/wg-quick/android.c b/src/wg-quick/android.c
index ad05895..cedc8a7 100644
--- a/src/wg-quick/android.c
+++ b/src/wg-quick/android.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  *
  * This is a shell script written in C. It very intentionally still functions like
  * a shell script, calling out to external executables such as ip(8).
diff --git a/src/wg-quick/darwin.bash b/src/wg-quick/darwin.bash
index d5dd396..d9d07cf 100755
--- a/src/wg-quick/darwin.bash
+++ b/src/wg-quick/darwin.bash
@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 # SPDX-License-Identifier: GPL-2.0
 #
-# Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+# Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
 #
 
 set -e -o pipefail
diff --git a/src/wg-quick/freebsd.bash b/src/wg-quick/freebsd.bash
index a72353c..c390dcc 100755
--- a/src/wg-quick/freebsd.bash
+++ b/src/wg-quick/freebsd.bash
@@ -1,7 +1,7 @@
 #!/usr/local/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 #
-# Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+# Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
 #
 
 set -e -o pipefail
diff --git a/src/wg-quick/linux.bash b/src/wg-quick/linux.bash
index cd5e066..7c2c002 100755
--- a/src/wg-quick/linux.bash
+++ b/src/wg-quick/linux.bash
@@ -1,7 +1,7 @@
 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 #
-# Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+# Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
 #
 
 set -e -o pipefail
diff --git a/src/wg-quick/openbsd.bash b/src/wg-quick/openbsd.bash
index 2cadeec..8d458d1 100755
--- a/src/wg-quick/openbsd.bash
+++ b/src/wg-quick/openbsd.bash
@@ -1,7 +1,7 @@
 #!/usr/local/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 #
-# Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+# Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
 #
 
 set -e -o pipefail
diff --git a/src/wg.c b/src/wg.c
index dc6dda4..b9952eb 100644
--- a/src/wg.c
+++ b/src/wg.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #include <stddef.h>
diff --git a/src/wincompat/compat.h b/src/wincompat/compat.h
index 4dada77..5decc66 100644
--- a/src/wincompat/compat.h
+++ b/src/wincompat/compat.h
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #define __USE_MINGW_ANSI_STDIO 1
diff --git a/src/wincompat/getrandom.c b/src/wincompat/getrandom.c
index 4e2c4bd..b064b04 100644
--- a/src/wincompat/getrandom.c
+++ b/src/wincompat/getrandom.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #include <stdbool.h>
diff --git a/src/wincompat/init.c b/src/wincompat/init.c
index 8d862ff..8943fff 100644
--- a/src/wincompat/init.c
+++ b/src/wincompat/init.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #include <winsock2.h>
diff --git a/src/wincompat/ipc.c b/src/wincompat/ipc.c
index 25471b0..9dce816 100644
--- a/src/wincompat/ipc.c
+++ b/src/wincompat/ipc.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #include <windows.h>
diff --git a/src/wincompat/libc.c b/src/wincompat/libc.c
index ad30278..870d913 100644
--- a/src/wincompat/libc.c
+++ b/src/wincompat/libc.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
+ * Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
  */
 
 #include <stdio.h>