diff --git a/Isosurfacing_3/include/CGAL/Isosurfacing_3/Cartesian_grid_3.h b/Isosurfacing_3/include/CGAL/Isosurfacing_3/Cartesian_grid_3.h
index 7f0c5113981..257e21a43fa 100644
--- a/Isosurfacing_3/include/CGAL/Isosurfacing_3/Cartesian_grid_3.h
+++ b/Isosurfacing_3/include/CGAL/Isosurfacing_3/Cartesian_grid_3.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2022 INRIA Sophia-Antipolis (France).
+// Copyright (c) 2022-2023 INRIA Sophia-Antipolis (France).
 // All rights reserved.
 //
 // This file is part of CGAL (www.cgal.org).
diff --git a/Isosurfacing_3/include/CGAL/Isosurfacing_3/Dual_contouring_3.h b/Isosurfacing_3/include/CGAL/Isosurfacing_3/Dual_contouring_3.h
index ec7024de510..f3b85e4e83d 100644
--- a/Isosurfacing_3/include/CGAL/Isosurfacing_3/Dual_contouring_3.h
+++ b/Isosurfacing_3/include/CGAL/Isosurfacing_3/Dual_contouring_3.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2022 INRIA Sophia-Antipolis (France).
+// Copyright (c) 2022-2023 INRIA Sophia-Antipolis (France).
 // All rights reserved.
 //
 // This file is part of CGAL (www.cgal.org).
diff --git a/Isosurfacing_3/include/CGAL/Isosurfacing_3/Explicit_cartesian_grid_domain.h b/Isosurfacing_3/include/CGAL/Isosurfacing_3/Explicit_cartesian_grid_domain.h
index 97de20f5076..ba7473d32ef 100644
--- a/Isosurfacing_3/include/CGAL/Isosurfacing_3/Explicit_cartesian_grid_domain.h
+++ b/Isosurfacing_3/include/CGAL/Isosurfacing_3/Explicit_cartesian_grid_domain.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2022 INRIA Sophia-Antipolis (France).
+// Copyright (c) 2022-2023 INRIA Sophia-Antipolis (France).
 // All rights reserved.
 //
 // This file is part of CGAL (www.cgal.org).
diff --git a/Isosurfacing_3/include/CGAL/Isosurfacing_3/Explicit_cartesian_grid_gradient.h b/Isosurfacing_3/include/CGAL/Isosurfacing_3/Explicit_cartesian_grid_gradient.h
index 231694e0775..1d4aa645aae 100644
--- a/Isosurfacing_3/include/CGAL/Isosurfacing_3/Explicit_cartesian_grid_gradient.h
+++ b/Isosurfacing_3/include/CGAL/Isosurfacing_3/Explicit_cartesian_grid_gradient.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2022 INRIA Sophia-Antipolis (France).
+// Copyright (c) 2022-2023 INRIA Sophia-Antipolis (France).
 // All rights reserved.
 //
 // This file is part of CGAL (www.cgal.org).
diff --git a/Isosurfacing_3/include/CGAL/Isosurfacing_3/Finite_difference_gradient.h b/Isosurfacing_3/include/CGAL/Isosurfacing_3/Finite_difference_gradient.h
index e2d2c1e6567..f7b48050980 100644
--- a/Isosurfacing_3/include/CGAL/Isosurfacing_3/Finite_difference_gradient.h
+++ b/Isosurfacing_3/include/CGAL/Isosurfacing_3/Finite_difference_gradient.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2022 INRIA Sophia-Antipolis (France).
+// Copyright (c) 2022-2023 INRIA Sophia-Antipolis (France).
 // All rights reserved.
 //
 // This file is part of CGAL (www.cgal.org).
diff --git a/Isosurfacing_3/include/CGAL/Isosurfacing_3/Implicit_cartesian_grid_domain.h b/Isosurfacing_3/include/CGAL/Isosurfacing_3/Implicit_cartesian_grid_domain.h
index 77a146cd848..0e91962f2c5 100644
--- a/Isosurfacing_3/include/CGAL/Isosurfacing_3/Implicit_cartesian_grid_domain.h
+++ b/Isosurfacing_3/include/CGAL/Isosurfacing_3/Implicit_cartesian_grid_domain.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2022 INRIA Sophia-Antipolis (France).
+// Copyright (c) 2022-2023 INRIA Sophia-Antipolis (France).
 // All rights reserved.
 //
 // This file is part of CGAL (www.cgal.org).
diff --git a/Isosurfacing_3/include/CGAL/Isosurfacing_3/Implicit_octree_domain.h b/Isosurfacing_3/include/CGAL/Isosurfacing_3/Implicit_octree_domain.h
index 5c2dfd0eed2..413e095c8ec 100644
--- a/Isosurfacing_3/include/CGAL/Isosurfacing_3/Implicit_octree_domain.h
+++ b/Isosurfacing_3/include/CGAL/Isosurfacing_3/Implicit_octree_domain.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2022 INRIA Sophia-Antipolis (France).
+// Copyright (c) 2022-2023 INRIA Sophia-Antipolis (France).
 // All rights reserved.
 //
 // This file is part of CGAL (www.cgal.org).
diff --git a/Isosurfacing_3/include/CGAL/Isosurfacing_3/Marching_cubes_3.h b/Isosurfacing_3/include/CGAL/Isosurfacing_3/Marching_cubes_3.h
index 50eaf964d9d..177872b50ff 100644
--- a/Isosurfacing_3/include/CGAL/Isosurfacing_3/Marching_cubes_3.h
+++ b/Isosurfacing_3/include/CGAL/Isosurfacing_3/Marching_cubes_3.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2022 INRIA Sophia-Antipolis (France).
+// Copyright (c) 2022-2023 INRIA Sophia-Antipolis (France).
 // All rights reserved.
 //
 // This file is part of CGAL (www.cgal.org).
diff --git a/Isosurfacing_3/include/CGAL/Isosurfacing_3/Zero_gradient.h b/Isosurfacing_3/include/CGAL/Isosurfacing_3/Zero_gradient.h
index 10a3b3e82b8..10480699973 100644
--- a/Isosurfacing_3/include/CGAL/Isosurfacing_3/Zero_gradient.h
+++ b/Isosurfacing_3/include/CGAL/Isosurfacing_3/Zero_gradient.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2022 INRIA Sophia-Antipolis (France).
+// Copyright (c) 2022-2023 INRIA Sophia-Antipolis (France).
 // All rights reserved.
 //
 // This file is part of CGAL (www.cgal.org).
diff --git a/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Base_domain.h b/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Base_domain.h
index 769f9bab58f..5f45dc1a4c5 100644
--- a/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Base_domain.h
+++ b/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Base_domain.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2022 INRIA Sophia-Antipolis (France).
+// Copyright (c) 2022-2023 INRIA Sophia-Antipolis (France).
 // All rights reserved.
 //
 // This file is part of CGAL (www.cgal.org).
diff --git a/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Cartesian_grid_geometry.h b/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Cartesian_grid_geometry.h
index 4f815586729..694cb630c1a 100644
--- a/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Cartesian_grid_geometry.h
+++ b/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Cartesian_grid_geometry.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2022 INRIA Sophia-Antipolis (France).
+// Copyright (c) 2022-2023 INRIA Sophia-Antipolis (France).
 // All rights reserved.
 //
 // This file is part of CGAL (www.cgal.org).
diff --git a/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Cell_type.h b/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Cell_type.h
index d7ffc01ba53..6705baf10d6 100644
--- a/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Cell_type.h
+++ b/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Cell_type.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2022 INRIA Sophia-Antipolis (France).
+// Copyright (c) 2022-2023 INRIA Sophia-Antipolis (France).
 // All rights reserved.
 //
 // This file is part of CGAL (www.cgal.org).
diff --git a/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Dual_contouring_internal.h b/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Dual_contouring_internal.h
index 46e803dce09..1f3f48e0f07 100644
--- a/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Dual_contouring_internal.h
+++ b/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Dual_contouring_internal.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2022 INRIA Sophia-Antipolis (France).
+// Copyright (c) 2022-2023 INRIA Sophia-Antipolis (France).
 // All rights reserved.
 //
 // This file is part of CGAL (www.cgal.org).
diff --git a/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Grid_topology.h b/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Grid_topology.h
index e89fd0da810..ff39059ebb6 100644
--- a/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Grid_topology.h
+++ b/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Grid_topology.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2022 INRIA Sophia-Antipolis (France).
+// Copyright (c) 2022-2023 INRIA Sophia-Antipolis (France).
 // All rights reserved.
 //
 // This file is part of CGAL (www.cgal.org).
diff --git a/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Implicit_function_with_geometry.h b/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Implicit_function_with_geometry.h
index e43cca72d7d..751a488a8a1 100644
--- a/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Implicit_function_with_geometry.h
+++ b/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Implicit_function_with_geometry.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2022 INRIA Sophia-Antipolis (France).
+// Copyright (c) 2022-2023 INRIA Sophia-Antipolis (France).
 // All rights reserved.
 //
 // This file is part of CGAL (www.cgal.org).
diff --git a/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Octree_geometry.h b/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Octree_geometry.h
index 6483fe751eb..edcd66ce4bc 100644
--- a/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Octree_geometry.h
+++ b/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Octree_geometry.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2022 INRIA Sophia-Antipolis (France).
+// Copyright (c) 2022-2023 INRIA Sophia-Antipolis (France).
 // All rights reserved.
 //
 // This file is part of CGAL (www.cgal.org).
diff --git a/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Octree_topology.h b/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Octree_topology.h
index cf58318c2d5..652bf34ce3a 100644
--- a/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Octree_topology.h
+++ b/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Octree_topology.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2022 INRIA Sophia-Antipolis (France).
+// Copyright (c) 2022-2023 INRIA Sophia-Antipolis (France).
 // All rights reserved.
 //
 // This file is part of CGAL (www.cgal.org).
diff --git a/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Octree_wrapper.h b/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Octree_wrapper.h
index 6b12af90017..52d7482faf3 100644
--- a/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Octree_wrapper.h
+++ b/Isosurfacing_3/include/CGAL/Isosurfacing_3/internal/Octree_wrapper.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2022 INRIA Sophia-Antipolis (France).
+// Copyright (c) 2022-2023 INRIA Sophia-Antipolis (France).
 // All rights reserved.
 //
 // This file is part of CGAL (www.cgal.org).