diff --git a/LICENSE b/LICENSE
index 0280d8d..a37128f 100644
--- a/LICENSE
+++ b/LICENSE
@@ -167,7 +167,7 @@ a file or class name and description of purpose be included on the same "printed
 page" as the copyright notice for easier identification within third-party
 archives.
 
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/LICENSE.HEADER b/LICENSE.HEADER
index 9991e46..0b28792 100644
--- a/LICENSE.HEADER
+++ b/LICENSE.HEADER
@@ -1,4 +1,4 @@
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/dist/doip.js b/dist/doip.js
index 9d889b3..375dadc 100644
--- a/dist/doip.js
+++ b/dist/doip.js
@@ -1252,7 +1252,7 @@ module.exports={
 },{}],10:[function(require,module,exports){
 (function (global){(function (){
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -1570,7 +1570,7 @@ exports.verify = verify
 }).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
 },{"./keys":12,"./serviceproviders":13,"./utils":29,"merge-options":5,"path":6,"valid-url":8}],11:[function(require,module,exports){
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -1599,7 +1599,7 @@ exports.utils = utils
 },{"./claims":10,"./keys":12,"./serviceproviders":13,"./signatures":28,"./utils":29}],12:[function(require,module,exports){
 (function (global){(function (){
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -1837,7 +1837,7 @@ exports.getFingerprint = getFingerprint
 }).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
 },{"bent":1,"merge-options":5,"path":6,"valid-url":8}],13:[function(require,module,exports){
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -1969,7 +1969,7 @@ exports.proxyRequestHandler = proxyRequestHandler
 
 },{"../package.json":9,"./serviceproviders/devto":14,"./serviceproviders/discourse":15,"./serviceproviders/dns":16,"./serviceproviders/fediverse":17,"./serviceproviders/gitea":18,"./serviceproviders/github":19,"./serviceproviders/gitlab":20,"./serviceproviders/hackernews":21,"./serviceproviders/liberapay":22,"./serviceproviders/lobsters":23,"./serviceproviders/mastodon":24,"./serviceproviders/reddit":25,"./serviceproviders/twitter":26,"./serviceproviders/xmpp":27,"./utils":29,"bent":1}],14:[function(require,module,exports){
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -2038,7 +2038,7 @@ exports.tests = tests
 
 },{}],15:[function(require,module,exports){
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -2107,7 +2107,7 @@ exports.tests = tests
 
 },{}],16:[function(require,module,exports){
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -2205,7 +2205,7 @@ exports.tests = tests
 
 },{"../utils":29,"bent":1,"dns":3}],17:[function(require,module,exports){
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -2274,7 +2274,7 @@ exports.tests = tests
 
 },{}],18:[function(require,module,exports){
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -2343,7 +2343,7 @@ exports.tests = tests
 
 },{}],19:[function(require,module,exports){
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -2412,7 +2412,7 @@ exports.tests = tests
 
 },{}],20:[function(require,module,exports){
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -2524,7 +2524,7 @@ exports.tests = tests
 
 },{"bent":1}],21:[function(require,module,exports){
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -2593,7 +2593,7 @@ exports.tests = tests
 
 },{}],22:[function(require,module,exports){
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -2662,7 +2662,7 @@ exports.tests = tests
 
 },{}],23:[function(require,module,exports){
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -2731,7 +2731,7 @@ exports.tests = tests
 
 },{}],24:[function(require,module,exports){
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -2800,7 +2800,7 @@ exports.tests = tests
 
 },{}],25:[function(require,module,exports){
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -2877,7 +2877,7 @@ exports.tests = tests
 
 },{}],26:[function(require,module,exports){
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -2946,7 +2946,7 @@ exports.tests = tests
 
 },{}],27:[function(require,module,exports){
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -3017,7 +3017,7 @@ exports.tests = tests
 },{"../utils":29}],28:[function(require,module,exports){
 (function (global){(function (){
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -3143,7 +3143,7 @@ exports.verify = verify
 }).call(this)}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
 },{"./claims":10,"./keys":12,"merge-options":5}],29:[function(require,module,exports){
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/src/claims.js b/src/claims.js
index cec7530..e18695a 100644
--- a/src/claims.js
+++ b/src/claims.js
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/src/index.js b/src/index.js
index 26fdbbb..147d589 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/src/keys.js b/src/keys.js
index 5ceedf2..bfa24f8 100644
--- a/src/keys.js
+++ b/src/keys.js
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/src/serviceproviders.js b/src/serviceproviders.js
index bd67495..0e233ba 100644
--- a/src/serviceproviders.js
+++ b/src/serviceproviders.js
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/src/serviceproviders/devto.js b/src/serviceproviders/devto.js
index 1bfa881..05d1713 100644
--- a/src/serviceproviders/devto.js
+++ b/src/serviceproviders/devto.js
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/src/serviceproviders/discourse.js b/src/serviceproviders/discourse.js
index 74e23ff..c54e41b 100644
--- a/src/serviceproviders/discourse.js
+++ b/src/serviceproviders/discourse.js
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/src/serviceproviders/dns.js b/src/serviceproviders/dns.js
index b54545c..50d3322 100644
--- a/src/serviceproviders/dns.js
+++ b/src/serviceproviders/dns.js
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/src/serviceproviders/fediverse.js b/src/serviceproviders/fediverse.js
index c193247..5047786 100644
--- a/src/serviceproviders/fediverse.js
+++ b/src/serviceproviders/fediverse.js
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/src/serviceproviders/gitea.js b/src/serviceproviders/gitea.js
index c4cb915..c80cf51 100644
--- a/src/serviceproviders/gitea.js
+++ b/src/serviceproviders/gitea.js
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/src/serviceproviders/github.js b/src/serviceproviders/github.js
index 9b1f6d3..c0e843e 100644
--- a/src/serviceproviders/github.js
+++ b/src/serviceproviders/github.js
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/src/serviceproviders/gitlab.js b/src/serviceproviders/gitlab.js
index 45c6ce1..f84217f 100644
--- a/src/serviceproviders/gitlab.js
+++ b/src/serviceproviders/gitlab.js
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/src/serviceproviders/hackernews.js b/src/serviceproviders/hackernews.js
index b74762e..0f324f7 100644
--- a/src/serviceproviders/hackernews.js
+++ b/src/serviceproviders/hackernews.js
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/src/serviceproviders/liberapay.js b/src/serviceproviders/liberapay.js
index 7e7d359..89f8c94 100644
--- a/src/serviceproviders/liberapay.js
+++ b/src/serviceproviders/liberapay.js
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/src/serviceproviders/lobsters.js b/src/serviceproviders/lobsters.js
index 8f0399b..3320567 100644
--- a/src/serviceproviders/lobsters.js
+++ b/src/serviceproviders/lobsters.js
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/src/serviceproviders/mastodon.js b/src/serviceproviders/mastodon.js
index f84b70f..299107a 100644
--- a/src/serviceproviders/mastodon.js
+++ b/src/serviceproviders/mastodon.js
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/src/serviceproviders/owncast.js b/src/serviceproviders/owncast.js
index 1e46f2c..53458c4 100644
--- a/src/serviceproviders/owncast.js
+++ b/src/serviceproviders/owncast.js
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/src/serviceproviders/reddit.js b/src/serviceproviders/reddit.js
index 88cb500..66c1a19 100644
--- a/src/serviceproviders/reddit.js
+++ b/src/serviceproviders/reddit.js
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/src/serviceproviders/twitter.js b/src/serviceproviders/twitter.js
index 3ec246e..b9970da 100644
--- a/src/serviceproviders/twitter.js
+++ b/src/serviceproviders/twitter.js
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/src/serviceproviders/xmpp.js b/src/serviceproviders/xmpp.js
index 24f509f..be03bc3 100644
--- a/src/serviceproviders/xmpp.js
+++ b/src/serviceproviders/xmpp.js
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/src/signatures.js b/src/signatures.js
index 446c6cd..d178293 100644
--- a/src/signatures.js
+++ b/src/signatures.js
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/src/utils.js b/src/utils.js
index a3ff729..b7d3672 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/test/claims.test.js b/test/claims.test.js
index 2dea201..f9d3089 100644
--- a/test/claims.test.js
+++ b/test/claims.test.js
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/test/keys.test.js b/test/keys.test.js
index f2eff8e..9c74551 100644
--- a/test/keys.test.js
+++ b/test/keys.test.js
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/test/serviceproviders.test.js b/test/serviceproviders.test.js
index 3c509c0..877abd0 100644
--- a/test/serviceproviders.test.js
+++ b/test/serviceproviders.test.js
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/test/signatures.test.js b/test/signatures.test.js
index ae7785b..2f4843e 100644
--- a/test/signatures.test.js
+++ b/test/signatures.test.js
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/test/utils.test.js b/test/utils.test.js
index fb785e8..87a1533 100644
--- a/test/utils.test.js
+++ b/test/utils.test.js
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 Yarmo Mackenbach
+Copyright 2021 Yarmo Mackenbach
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.