Fix copyright year

diff --git a/tests/particles/remove_particle_01.cc b/tests/particles/remove_particle_01.cc
index edf8334f50bd159407f2a07aef3de728703cb5ee..316fcfa35ad4517ab654ae8e4f2f55adbaf30e95 100644 (file)
--- a/tests/particles/remove_particle_01.cc
+++ b/tests/particles/remove_particle_01.cc
@@ -1,6 +1,6 @@
 // ---------------------------------------------------------------------
 //
-// Copyright (C) 2017 - 2019 by the deal.II authors
+// Copyright (C) 2021 by the deal.II authors
 //
 // This file is part of the deal.II library.
 //