diff --git a/exwm-background.el b/exwm-background.el
index f3e0d89..9c9bc5e 100644
--- a/exwm-background.el
+++ b/exwm-background.el
@@ -1,6 +1,6 @@
 ;;; exwm-background.el --- X Background Module for EXWM  -*- lexical-binding: t -*-
 
-;; Copyright (C) 2022 Free Software Foundation, Inc.
+;; Copyright (C) 2022-2023 Free Software Foundation, Inc.
 
 ;; Author: Steven Allen <steven@stebalien.com>
 
diff --git a/exwm-cm.el b/exwm-cm.el
index 8a45010..d2d04cb 100644
--- a/exwm-cm.el
+++ b/exwm-cm.el
@@ -1,6 +1,6 @@
 ;;; exwm-cm.el --- Compositing Manager for EXWM  -*- lexical-binding: t -*-
 
-;; Copyright (C) 2016-2021 Free Software Foundation, Inc.
+;; Copyright (C) 2016-2023 Free Software Foundation, Inc.
 
 ;; Author: Chris Feng <chris.w.feng@gmail.com>
 
diff --git a/exwm-config.el b/exwm-config.el
index 9609f4c..f335780 100644
--- a/exwm-config.el
+++ b/exwm-config.el
@@ -1,6 +1,6 @@
 ;;; exwm-config.el --- Predefined configurations  -*- lexical-binding: t -*-
 
-;; Copyright (C) 2015-2021 Free Software Foundation, Inc.
+;; Copyright (C) 2015-2023 Free Software Foundation, Inc.
 
 ;; Author: Chris Feng <chris.w.feng@gmail.com>
 
diff --git a/exwm-core.el b/exwm-core.el
index bd6fcf8..defe2f7 100644
--- a/exwm-core.el
+++ b/exwm-core.el
@@ -1,6 +1,6 @@
 ;;; exwm-core.el --- Core definitions  -*- lexical-binding: t -*-
 
-;; Copyright (C) 2015-2021 Free Software Foundation, Inc.
+;; Copyright (C) 2015-2023 Free Software Foundation, Inc.
 
 ;; Author: Chris Feng <chris.w.feng@gmail.com>
 
diff --git a/exwm-floating.el b/exwm-floating.el
index c8e433e..def7f43 100644
--- a/exwm-floating.el
+++ b/exwm-floating.el
@@ -1,6 +1,6 @@
 ;;; exwm-floating.el --- Floating Module for EXWM  -*- lexical-binding: t -*-
 
-;; Copyright (C) 2015-2021 Free Software Foundation, Inc.
+;; Copyright (C) 2015-2023 Free Software Foundation, Inc.
 
 ;; Author: Chris Feng <chris.w.feng@gmail.com>
 
diff --git a/exwm-input.el b/exwm-input.el
index 7ec9a29..c76f1c4 100644
--- a/exwm-input.el
+++ b/exwm-input.el
@@ -1,6 +1,6 @@
 ;;; exwm-input.el --- Input Module for EXWM  -*- lexical-binding: t -*-
 
-;; Copyright (C) 2015-2021 Free Software Foundation, Inc.
+;; Copyright (C) 2015-2023 Free Software Foundation, Inc.
 
 ;; Author: Chris Feng <chris.w.feng@gmail.com>
 
diff --git a/exwm-layout.el b/exwm-layout.el
index ea186fe..5666818 100644
--- a/exwm-layout.el
+++ b/exwm-layout.el
@@ -1,6 +1,6 @@
 ;;; exwm-layout.el --- Layout Module for EXWM  -*- lexical-binding: t -*-
 
-;; Copyright (C) 2015-2021 Free Software Foundation, Inc.
+;; Copyright (C) 2015-2023 Free Software Foundation, Inc.
 
 ;; Author: Chris Feng <chris.w.feng@gmail.com>
 
diff --git a/exwm-manage.el b/exwm-manage.el
index a94caee..a4d7dab 100644
--- a/exwm-manage.el
+++ b/exwm-manage.el
@@ -1,7 +1,7 @@
 ;;; exwm-manage.el --- Window Management Module for  -*- lexical-binding: t -*-
 ;;;                    EXWM
 
-;; Copyright (C) 2015-2021 Free Software Foundation, Inc.
+;; Copyright (C) 2015-2023 Free Software Foundation, Inc.
 
 ;; Author: Chris Feng <chris.w.feng@gmail.com>
 
diff --git a/exwm-randr.el b/exwm-randr.el
index 68bfdd7..e15d43f 100644
--- a/exwm-randr.el
+++ b/exwm-randr.el
@@ -1,6 +1,6 @@
 ;;; exwm-randr.el --- RandR Module for EXWM  -*- lexical-binding: t -*-
 
-;; Copyright (C) 2015-2021 Free Software Foundation, Inc.
+;; Copyright (C) 2015-2023 Free Software Foundation, Inc.
 
 ;; Author: Chris Feng <chris.w.feng@gmail.com>
 
diff --git a/exwm-systemtray.el b/exwm-systemtray.el
index 3fcbb8a..05fd357 100644
--- a/exwm-systemtray.el
+++ b/exwm-systemtray.el
@@ -1,7 +1,7 @@
 ;;; exwm-systemtray.el --- System Tray Module for  -*- lexical-binding: t -*-
 ;;;                        EXWM
 
-;; Copyright (C) 2016-2022 Free Software Foundation, Inc.
+;; Copyright (C) 2016-2023 Free Software Foundation, Inc.
 
 ;; Author: Chris Feng <chris.w.feng@gmail.com>
 
diff --git a/exwm-workspace.el b/exwm-workspace.el
index 1db9127..4d54f65 100644
--- a/exwm-workspace.el
+++ b/exwm-workspace.el
@@ -1,6 +1,6 @@
 ;;; exwm-workspace.el --- Workspace Module for EXWM  -*- lexical-binding: t -*-
 
-;; Copyright (C) 1015-2021 Free Software Foundation, Inc.
+;; Copyright (C) 1015-2023 Free Software Foundation, Inc.
 
 ;; Author: Chris Feng <chris.w.feng@gmail.com>
 
diff --git a/exwm-xim.el b/exwm-xim.el
index ac530f3..c03f476 100644
--- a/exwm-xim.el
+++ b/exwm-xim.el
@@ -1,6 +1,6 @@
 ;;; exwm-xim.el --- XIM Module for EXWM  -*- lexical-binding: t -*-
 
-;; Copyright (C) 2019-2021 Free Software Foundation, Inc.
+;; Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
 ;; Author: Chris Feng <chris.w.feng@gmail.com>
 
diff --git a/exwm.el b/exwm.el
index 31fe684..e7bc134 100644
--- a/exwm.el
+++ b/exwm.el
@@ -1,6 +1,6 @@
 ;;; exwm.el --- Emacs X Window Manager  -*- lexical-binding: t -*-
 
-;; Copyright (C) 2015-2021 Free Software Foundation, Inc.
+;; Copyright (C) 2015-2023 Free Software Foundation, Inc.
 
 ;; Author: Chris Feng <chris.w.feng@gmail.com>
 ;; Maintainer: Adrián Medraño Calvo <adrian@medranocalvo.com>