diff --git a/include/mimalloc-internal.h b/include/mimalloc-internal.h
index 3da9a0c8..b90595ba 100644
--- a/include/mimalloc-internal.h
+++ b/include/mimalloc-internal.h
@@ -1,5 +1,5 @@
 /* ----------------------------------------------------------------------------
-Copyright (c) 2018-2021, Microsoft Research, Daan Leijen
+Copyright (c) 2018-2022, Microsoft Research, Daan Leijen
 This is free software; you can redistribute it and/or modify it under the
 terms of the MIT license. A copy of the license can be found in the file
 "LICENSE" at the root of this distribution.
diff --git a/include/mimalloc.h b/include/mimalloc.h
index e7cbec11..6f950751 100644
--- a/include/mimalloc.h
+++ b/include/mimalloc.h
@@ -1,5 +1,5 @@
 /* ----------------------------------------------------------------------------
-Copyright (c) 2018-2021, Microsoft Research, Daan Leijen
+Copyright (c) 2018-2022, Microsoft Research, Daan Leijen
 This is free software; you can redistribute it and/or modify it under the
 terms of the MIT license. A copy of the license can be found in the file
 "LICENSE" at the root of this distribution.
diff --git a/src/alloc-override-osx.c b/src/alloc-override-osx.c
index 7e5c4e3e..b53032e2 100644
--- a/src/alloc-override-osx.c
+++ b/src/alloc-override-osx.c
@@ -1,5 +1,5 @@
 /* ----------------------------------------------------------------------------
-Copyright (c) 2018-2020, Microsoft Research, Daan Leijen
+Copyright (c) 2018-2022, Microsoft Research, Daan Leijen
 This is free software; you can redistribute it and/or modify it under the
 terms of the MIT license. A copy of the license can be found in the file
 "LICENSE" at the root of this distribution.
diff --git a/src/alloc.c b/src/alloc.c
index ca32caba..53dd5963 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -1,5 +1,5 @@
 /* ----------------------------------------------------------------------------
-Copyright (c) 2018-2021, Microsoft Research, Daan Leijen
+Copyright (c) 2018-2022, Microsoft Research, Daan Leijen
 This is free software; you can redistribute it and/or modify it under the
 terms of the MIT license. A copy of the license can be found in the file
 "LICENSE" at the root of this distribution.
diff --git a/src/init.c b/src/init.c
index e06fa6b9..39a0d6fe 100644
--- a/src/init.c
+++ b/src/init.c
@@ -1,5 +1,5 @@
 /* ----------------------------------------------------------------------------
-Copyright (c) 2018-2021, Microsoft Research, Daan Leijen
+Copyright (c) 2018-2022, Microsoft Research, Daan Leijen
 This is free software; you can redistribute it and/or modify it under the
 terms of the MIT license. A copy of the license can be found in the file
 "LICENSE" at the root of this distribution.