diff --git a/include/boost/lambda2/lambda2.hpp b/include/boost/lambda2/lambda2.hpp
index 4c4577d..6a49fc3 100644
--- a/include/boost/lambda2/lambda2.hpp
+++ b/include/boost/lambda2/lambda2.hpp
@@ -1,7 +1,7 @@
 #ifndef BOOST_LAMBDA2_LAMBDA2_HPP_INCLUDED
 #define BOOST_LAMBDA2_LAMBDA2_HPP_INCLUDED
 
-// Copyright 2020 Peter Dimov
+// Copyright 2020, 2021 Peter Dimov
 // Distributed under the Boost Software License, Version 1.0.
 // https://www.boost.org/LICENSE_1_0.txt