diff --git a/Gemfile b/Gemfile
index 4840882..a0965d6 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,4 @@
-# Copyright (c) 2018-2023 Zerocracy
+# Copyright (c) 2018-2025 Zerocracy
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the 'Software'), to deal
diff --git a/html/404.html b/html/404.html
index 36b8c0d..6ffde9b 100644
--- a/html/404.html
+++ b/html/404.html
@@ -2,7 +2,7 @@
 <!--
 (The MIT License)
 
-Copyright (c) 2018-2023 Zerocracy
+Copyright (c) 2018-2025 Zerocracy
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the 'Software'), to deal
diff --git a/html/index.html b/html/index.html
index 3bb05cc..70ee893 100644
--- a/html/index.html
+++ b/html/index.html
@@ -2,7 +2,7 @@
 <!--
 (The MIT License)
 
-Copyright (c) 2018-2023 Zerocracy
+Copyright (c) 2018-2025 Zerocracy
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the 'Software'), to deal
@@ -94,7 +94,7 @@
         <nav>
           <ul>
             <li>
-              &copy; 2018-2020
+              &copy; 2018-2025
             </li>
             <li>
               0.0.0