diff --git a/LICENSE.txt b/LICENSE.txt
index 81f41b0..fb3de8c 100644
--- a/LICENSE.txt
+++ b/LICENSE.txt
@@ -1,4 +1,4 @@
-Copyright (c) 2015-2024, OpenGeoSys Community (http://www.opengeosys.org)
+Copyright (c) 2015-2025, OpenGeoSys Community (http://www.opengeosys.org)
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
@@ -8,23 +8,17 @@ modification, are permitted provided that the following conditions are met:
 2. Redistributions in binary form must reproduce the above copyright
    notice, this list of conditions and the following disclaimer in the
    documentation and/or other materials provided with the distribution.
-3. All advertising materials mentioning features or use of this software
-   must display the following acknowledgement:
-   This product includes software developed by the OpenGeoSys Community.
-4. Neither the name of the OpenGeoSys Community nor the
+3. Neither the name of the OpenGeoSys Community nor the
    names of its contributors may be used to endorse or promote products
    derived from this software without specific prior written permission.
-5. Attribute the OpenGeoSys Community, preferably citing an appropriate
-   paper listed on the OpenGeoSys Community homepage:
-   http://www.opengeosys.org/papers
 
-THIS SOFTWARE IS PROVIDED BY THE OpenGeoSys Community ''AS IS'' AND ANY
-EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-DISCLAIMED. IN NO EVENT SHALL THE OpenGeoSys Community BE LIABLE FOR ANY
-DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/README.md b/README.md
index db929fd..7fd4875 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,5 @@
 # VtkDiff
+
 Numerical comparison of data arrays in vtk files.
 
 For comparison of numerical simulation results with analytical solutions
@@ -8,6 +9,7 @@ the vtkdiff tool shall provide means of numerical comparison of different
 data arrays similar to those available in the numdiff software.
 
 # License and copyright
-Copyright (c) 2015-2024, OpenGeoSys Community (http://www.opengeosys.org)
-Distributed under a Modified BSD License.
-See accompanying file LICENSE.txt or http://www.opengeosys.org/project/license.
+
+Copyright (c) 2015-2025, OpenGeoSys Community (<http://www.opengeosys.org>)
+vtkdiff is distributed under the Modified BSD License. See the
+[LICENSE.txt][license-source] for the license text.
diff --git a/vtkdiff.cpp b/vtkdiff.cpp
index d6568fb..472a362 100644
--- a/vtkdiff.cpp
+++ b/vtkdiff.cpp
@@ -1,6 +1,6 @@
 /**
  * \copyright
- * Copyright (c) 2015-2024, OpenGeoSys Community (http://www.opengeosys.org)
+ * Copyright (c) 2015-2025, OpenGeoSys Community (http://www.opengeosys.org)
  *            Distributed under a Modified BSD License.
  *              See accompanying file LICENSE.txt or
  *              http://www.opengeosys.org/project/license
@@ -85,7 +85,7 @@ auto parseCommandLine(int argc, char* argv[]) -> Args
 {
     TCLAP::CmdLine cmd(
         "VtkDiff software.\n"
-        "Copyright (c) 2015-2024, OpenGeoSys Community "
+        "Copyright (c) 2015-2025, OpenGeoSys Community "
         "(http://www.opengeosys.org) "
         "Distributed under a Modified BSD License. "
         "See accompanying file LICENSE.txt or "