diff --git a/LICENSE b/LICENSE
index 1dafde6..326052e 100644
--- a/LICENSE
+++ b/LICENSE
@@ -208,8 +208,8 @@ If you develop a new program, and you want it to be of the greatest possible use
 
 To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively state the exclusion of warranty; and each file should have at least the “copyright” line and a pointer to where the full notice is found.
 
-     restic-log-parser
-     Copyright (C) 2025  warrence
+     ResticLogParser
+     Copyright (C) 2025  Stefan Müller
 
      This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
 
@@ -221,7 +221,7 @@ Also add information on how to contact you by electronic and paper mail.
 
 If the program does terminal interaction, make it output a short notice like this when it starts in an interactive mode:
 
-     restic-log-parser  Copyright (C) 2025  warrence
+     ResticLogParser  Copyright (C) 2025  Stefan Müller
      This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
      This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details.
 
diff --git a/README.md b/README.md
index 2680b1d..457afd4 100644
--- a/README.md
+++ b/README.md
@@ -2,4 +2,14 @@
 
 Parses the log from a restic dry run for large added files and directories.
 
-See https://restic.readthedocs.io/en/stable/040_backup.html#dry-runs
\ No newline at end of file
+See https://restic.readthedocs.io/en/stable/040_backup.html#dry-runs
+
+# License
+
+Copyright (C) 2025 Stefan M�ller
+
+This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.
\ No newline at end of file
diff --git a/ResticLogParser/Program.cs b/ResticLogParser/Program.cs
index b9998b5..08a87af 100644
--- a/ResticLogParser/Program.cs
+++ b/ResticLogParser/Program.cs
@@ -1,4 +1,26 @@
-using ResticLogParser.src;
+// ResticLogParser
+// Copyright (C) 2025  Stefan Müller
+//
+// This program is free software: you can redistribute it and/or modify it under
+// the terms of the GNU General Public License as published by the Free Software
+// Foundation, either version 3 of the License, or (at your option) any later
+// version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with
+// this program.  If not, see <http://www.gnu.org/licenses/>.
+
+using ResticLogParser.src;
+
+Console.WriteLine("ResticLogParser  Copyright (C) 2025  Stefan Müller\r\n" +
+    "This program comes with ABSOLUTELY NO WARRANTY.  " +
+    "This is free software, and you are welcome to redistribute it under certain conditions.  " +
+    "See the GNU General Public License version 3 or any later version for more details.  " +
+    "You should have received a copy of the GNU General Public License along with this program.  " +
+    "If not, see https://www.gnu.org/licenses/.\r\n");
 
 if (args.Length < 3 || string.IsNullOrEmpty(args[0]) || string.IsNullOrEmpty(args[1]) || string.IsNullOrEmpty(args[2]))
 {
diff --git a/ResticLogParser/src/DirectoryNode.cs b/ResticLogParser/src/DirectoryNode.cs
index e102db0..e3d38cf 100644
--- a/ResticLogParser/src/DirectoryNode.cs
+++ b/ResticLogParser/src/DirectoryNode.cs
@@ -1,4 +1,19 @@
-namespace ResticLogParser.src
+// ResticLogParser
+// Copyright (C) 2025  Stefan Müller
+//
+// This program is free software: you can redistribute it and/or modify it under
+// the terms of the GNU General Public License as published by the Free Software
+// Foundation, either version 3 of the License, or (at your option) any later
+// version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with
+// this program.  If not, see <http://www.gnu.org/licenses/>.
+
+namespace ResticLogParser.src
 {
     internal class DirectoryNode : IComparable<DirectoryNode>
     {
diff --git a/ResticLogParser/src/FileLogEntry.cs b/ResticLogParser/src/FileLogEntry.cs
index 1acec92..440e897 100644
--- a/ResticLogParser/src/FileLogEntry.cs
+++ b/ResticLogParser/src/FileLogEntry.cs
@@ -1,4 +1,19 @@
-namespace ResticLogParser.src
+// ResticLogParser
+// Copyright (C) 2025  Stefan Müller
+//
+// This program is free software: you can redistribute it and/or modify it under
+// the terms of the GNU General Public License as published by the Free Software
+// Foundation, either version 3 of the License, or (at your option) any later
+// version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with
+// this program.  If not, see <http://www.gnu.org/licenses/>.
+
+namespace ResticLogParser.src
 {
     internal readonly struct FileLogEntry : IComparable<FileLogEntry>
     {
diff --git a/ResticLogParser/src/FileLogEntryType.cs b/ResticLogParser/src/FileLogEntryType.cs
index 54106cb..d091870 100644
--- a/ResticLogParser/src/FileLogEntryType.cs
+++ b/ResticLogParser/src/FileLogEntryType.cs
@@ -1,4 +1,19 @@
-namespace ResticLogParser.src
+// ResticLogParser
+// Copyright (C) 2025  Stefan Müller
+//
+// This program is free software: you can redistribute it and/or modify it under
+// the terms of the GNU General Public License as published by the Free Software
+// Foundation, either version 3 of the License, or (at your option) any later
+// version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with
+// this program.  If not, see <http://www.gnu.org/licenses/>.
+
+namespace ResticLogParser.src
 {
     internal enum FileLogEntryType
     {
diff --git a/ResticLogParser/src/FileSize.cs b/ResticLogParser/src/FileSize.cs
index eee0a56..42ae1a4 100644
--- a/ResticLogParser/src/FileSize.cs
+++ b/ResticLogParser/src/FileSize.cs
@@ -1,4 +1,19 @@
-using System.Globalization;
+// ResticLogParser
+// Copyright (C) 2025  Stefan Müller
+//
+// This program is free software: you can redistribute it and/or modify it under
+// the terms of the GNU General Public License as published by the Free Software
+// Foundation, either version 3 of the License, or (at your option) any later
+// version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with
+// this program.  If not, see <http://www.gnu.org/licenses/>.
+
+using System.Globalization;
 
 namespace ResticLogParser.src
 {
diff --git a/ResticLogParser/src/LogParser.cs b/ResticLogParser/src/LogParser.cs
index f083949..2b654a2 100644
--- a/ResticLogParser/src/LogParser.cs
+++ b/ResticLogParser/src/LogParser.cs
@@ -1,4 +1,19 @@
-using System.Text.RegularExpressions;
+// ResticLogParser
+// Copyright (C) 2025  Stefan Müller
+//
+// This program is free software: you can redistribute it and/or modify it under
+// the terms of the GNU General Public License as published by the Free Software
+// Foundation, either version 3 of the License, or (at your option) any later
+// version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with
+// this program.  If not, see <http://www.gnu.org/licenses/>.
+
+using System.Text.RegularExpressions;
 
 namespace ResticLogParser.src
 {
diff --git a/ResticLogParserTests/FileSizeTests.cs b/ResticLogParserTests/FileSizeTests.cs
index 5133db1..4163d12 100644
--- a/ResticLogParserTests/FileSizeTests.cs
+++ b/ResticLogParserTests/FileSizeTests.cs
@@ -1,3 +1,18 @@
+// ResticLogParser
+// Copyright (C) 2025  Stefan M�ller
+//
+// This program is free software: you can redistribute it and/or modify it under
+// the terms of the GNU General Public License as published by the Free Software
+// Foundation, either version 3 of the License, or (at your option) any later
+// version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along with
+// this program.  If not, see <http://www.gnu.org/licenses/>.
+
 using ResticLogParser.src;
 
 namespace ResticLogParserTests