diff --git a/include/wrenpp/vm.hpp b/include/wrenpp/vm.hpp
index 88a3208..926df0c 100644
--- a/include/wrenpp/vm.hpp
+++ b/include/wrenpp/vm.hpp
@@ -1,4 +1,4 @@
-/* Copyright 2020, Michele Santullo
+/* Copyright 2020-2022, Michele Santullo
  * This file is part of wrenpp.
  *
  * Wrenpp is free software: you can redistribute it and/or modify
diff --git a/include/wrenpp/vm_fun.hpp b/include/wrenpp/vm_fun.hpp
index c897e81..5c21f8f 100644
--- a/include/wrenpp/vm_fun.hpp
+++ b/include/wrenpp/vm_fun.hpp
@@ -1,4 +1,4 @@
-/* Copyright 2020, Michele Santullo
+/* Copyright 2020-2022, Michele Santullo
  * This file is part of wrenpp.
  *
  * Wrenpp is free software: you can redistribute it and/or modify
diff --git a/src/vm.cpp b/src/vm.cpp
index 6057f86..237458b 100644
--- a/src/vm.cpp
+++ b/src/vm.cpp
@@ -1,4 +1,4 @@
-/* Copyright 2020, Michele Santullo
+/* Copyright 2020-2022, Michele Santullo
  * This file is part of wrenpp.
  *
  * Wrenpp is free software: you can redistribute it and/or modify
diff --git a/src/vm_fun.cpp b/src/vm_fun.cpp
index 3a9797b..c201dda 100644
--- a/src/vm_fun.cpp
+++ b/src/vm_fun.cpp
@@ -1,4 +1,4 @@
-/* Copyright 2020, Michele Santullo
+/* Copyright 2020-2022, Michele Santullo
  * This file is part of wrenpp.
  *
  * Wrenpp is free software: you can redistribute it and/or modify