diff --git a/doc/lispref/parsing.texi b/doc/lispref/parsing.texi
index 3648ad2f26f..8ed633b61bb 100644
--- a/doc/lispref/parsing.texi
+++ b/doc/lispref/parsing.texi
@@ -1,6 +1,6 @@
 @c -*- mode: texinfo; coding: utf-8 -*-
 @c This is part of the GNU Emacs Lisp Reference Manual.
-@c Copyright (C) 2021 Free Software Foundation, Inc.
+@c Copyright (C) 2021-2022 Free Software Foundation, Inc.
 @c See the file elisp.texi for copying conditions.
 @node Parsing Program Source
 @chapter Parsing Program Source
diff --git a/src/treesit.h b/src/treesit.h
index c573085f1b2..60f1a0ceaf1 100644
--- a/src/treesit.h
+++ b/src/treesit.h
@@ -1,6 +1,6 @@
 /* Header file for the tree-sitter integration.
 
-Copyright (C) 2021 Free Software Foundation, Inc.
+Copyright (C) 2021-2022 Free Software Foundation, Inc.
 
 This file is part of GNU Emacs.
 
diff --git a/test/src/treesit-tests.el b/test/src/treesit-tests.el
index 2e26df69258..b143bdf3799 100644
--- a/test/src/treesit-tests.el
+++ b/test/src/treesit-tests.el
@@ -1,6 +1,6 @@
 ;;; treesit-tests.el --- tests for src/treesit.c         -*- lexical-binding: t; -*-
 
-;; Copyright (C) 2021 Free Software Foundation, Inc.
+;; Copyright (C) 2021-2022 Free Software Foundation, Inc.
 
 ;; This file is part of GNU Emacs.