diff --git a/COPYING b/COPYING
index 8fbe7edcd6cc5adbe639901fe68d3e262e579016..2879e0a756a618ade9c869c63dc891d3135fd03d 100644
--- a/COPYING
+++ b/COPYING
@@ -1,4 +1,4 @@
-Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/src/qt6ct-qtplugin/main.cpp b/src/qt6ct-qtplugin/main.cpp
index a50b4318cf741aa69af0cb91b4315046534af3de..064924641bba09055be707ffb517d83fea965fdb 100644
--- a/src/qt6ct-qtplugin/main.cpp
+++ b/src/qt6ct-qtplugin/main.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct-qtplugin/qt6ctplatformtheme.cpp b/src/qt6ct-qtplugin/qt6ctplatformtheme.cpp
index 4a283ff20a089c1afbf06d0d4b9ca2bb7700599f..d8b5fafe972dd175925b3930a5b8b99523b8947b 100644
--- a/src/qt6ct-qtplugin/qt6ctplatformtheme.cpp
+++ b/src/qt6ct-qtplugin/qt6ctplatformtheme.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct-qtplugin/qt6ctplatformtheme.h b/src/qt6ct-qtplugin/qt6ctplatformtheme.h
index 63bc391e46105784b4ae482750cac92db9aac1c1..36c4155a756236883211cbc291237f7f2874df85 100644
--- a/src/qt6ct-qtplugin/qt6ctplatformtheme.h
+++ b/src/qt6ct-qtplugin/qt6ctplatformtheme.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct-style/plugin.cpp b/src/qt6ct-style/plugin.cpp
index 161282573678e1530824f9e7bcbc9491dbb88e94..087f20df581b16cf49fa5d745e5add222a27b21a 100644
--- a/src/qt6ct-style/plugin.cpp
+++ b/src/qt6ct-style/plugin.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct-style/qt6ctproxystyle.cpp b/src/qt6ct-style/qt6ctproxystyle.cpp
index 5bfc51e50166d823105b1a199015b49d4e7a29d6..373b2e0f2b8f24a8c81904223dc3fc19db7e4949 100644
--- a/src/qt6ct-style/qt6ctproxystyle.cpp
+++ b/src/qt6ct-style/qt6ctproxystyle.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct-style/qt6ctproxystyle.h b/src/qt6ct-style/qt6ctproxystyle.h
index 866189cc61f6b411a2bc69febc0cb83d6e08dc4c..74cbcd7c5494ddc25cca8bc041d4dd0085f35b21 100644
--- a/src/qt6ct-style/qt6ctproxystyle.h
+++ b/src/qt6ct-style/qt6ctproxystyle.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct/appearancepage.cpp b/src/qt6ct/appearancepage.cpp
index 40852f49bd4a5cb15640f0c54c17eb4fbfe4c621..cfd61db58a4a954b8f41fedbb3e76920eb2458aa 100644
--- a/src/qt6ct/appearancepage.cpp
+++ b/src/qt6ct/appearancepage.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct/appearancepage.h b/src/qt6ct/appearancepage.h
index e86fbdb5be9529bd2cd4b86d0d64ba93dff5c9de..29762eef0c14a408ba9a921aee80d4ee96f10bb2 100644
--- a/src/qt6ct/appearancepage.h
+++ b/src/qt6ct/appearancepage.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct/fontconfigdialog.cpp b/src/qt6ct/fontconfigdialog.cpp
index 9e1c55ed1ca5fa5a1716517542cb31174e93f481..f3592f0cbf6cde86de81e9fb90346eaf138cf3a9 100644
--- a/src/qt6ct/fontconfigdialog.cpp
+++ b/src/qt6ct/fontconfigdialog.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct/fontconfigdialog.h b/src/qt6ct/fontconfigdialog.h
index 8f1808e0387ce6ff9d2dc3a734b53ea2e55ce14c..9e7f070e460f4297439d5f66cdb80f8750871477 100644
--- a/src/qt6ct/fontconfigdialog.h
+++ b/src/qt6ct/fontconfigdialog.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct/fontspage.cpp b/src/qt6ct/fontspage.cpp
index 7435bc44279c0bdd836ee9dad4cb81da91585f8b..8b8aff9a3c111c834a237b2548364ed343a41deb 100644
--- a/src/qt6ct/fontspage.cpp
+++ b/src/qt6ct/fontspage.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct/fontspage.h b/src/qt6ct/fontspage.h
index 23e55209a9448429dda71a38945b2737a01aa865..85d8f5039ac613bbab8c68220a20907e1e84002c 100644
--- a/src/qt6ct/fontspage.h
+++ b/src/qt6ct/fontspage.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct/iconthemepage.cpp b/src/qt6ct/iconthemepage.cpp
index b9bc6be194226411b7ed1ca83b8aeb5a5a993c22..1ac4acd0790acfe85951468a0f53d051503be956 100644
--- a/src/qt6ct/iconthemepage.cpp
+++ b/src/qt6ct/iconthemepage.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct/iconthemepage.h b/src/qt6ct/iconthemepage.h
index 6b2d3311d0d6ea57c2787aae56b8bd0f08dfbe07..47da1737b3b889810ddd379cd4ef6f3e05007815 100644
--- a/src/qt6ct/iconthemepage.h
+++ b/src/qt6ct/iconthemepage.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct/interfacepage.cpp b/src/qt6ct/interfacepage.cpp
index 7a86cdc64260cda24adc075b926d7c74f18f3f57..4d9faca1bab203fa431b89872a0710940df1f1cd 100644
--- a/src/qt6ct/interfacepage.cpp
+++ b/src/qt6ct/interfacepage.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct/interfacepage.h b/src/qt6ct/interfacepage.h
index f84e8e6ce0c3132347c04e02b9974b9ad1dc1167..2d7a4e7bcc027636a46dbb1173dc7067154a7d3d 100644
--- a/src/qt6ct/interfacepage.h
+++ b/src/qt6ct/interfacepage.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct/main.cpp b/src/qt6ct/main.cpp
index 78cc82df8446bc966f731f68573d487884456ae8..89e72a69a3284ef646d93daac15595cdbc569cde 100644
--- a/src/qt6ct/main.cpp
+++ b/src/qt6ct/main.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct/mainwindow.cpp b/src/qt6ct/mainwindow.cpp
index 46bf46a499e1a69e59e1e4c36412205fb854c32b..e3f5f6aa2ac32f6d7559a051cb39ba0f759ccc43 100644
--- a/src/qt6ct/mainwindow.cpp
+++ b/src/qt6ct/mainwindow.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct/mainwindow.h b/src/qt6ct/mainwindow.h
index 2bb2f6475d382355b18fcf1079cf38001c793d71..b9f1644144b5dcb2d05b42651fcdfba29c1f99f1 100644
--- a/src/qt6ct/mainwindow.h
+++ b/src/qt6ct/mainwindow.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct/paletteeditdialog.cpp b/src/qt6ct/paletteeditdialog.cpp
index d6f5fb3898fc8a92e36c92692d86dc27aedf659b..31cc9bdac965ab60a04a510050a19c36a9feb552 100644
--- a/src/qt6ct/paletteeditdialog.cpp
+++ b/src/qt6ct/paletteeditdialog.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct/paletteeditdialog.h b/src/qt6ct/paletteeditdialog.h
index 8797c533924527bec0d4d435fe14694990de4d5a..7c52fdee35de5cfcb5b8b76f5e3f9b0f979b4f42 100644
--- a/src/qt6ct/paletteeditdialog.h
+++ b/src/qt6ct/paletteeditdialog.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct/qsseditordialog.cpp b/src/qt6ct/qsseditordialog.cpp
index 0a91250f507b01a9f11d25501149614e70fb8150..45c3a1d4e9423c26fc33af07cfc63d30efcb7a4b 100644
--- a/src/qt6ct/qsseditordialog.cpp
+++ b/src/qt6ct/qsseditordialog.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct/qsseditordialog.h b/src/qt6ct/qsseditordialog.h
index 0ba917c362aec7ec3fcf6568a49e513a6db62b11..47018fbea1f53587359152abf7591dc642ae0181 100644
--- a/src/qt6ct/qsseditordialog.h
+++ b/src/qt6ct/qsseditordialog.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct/qsspage.cpp b/src/qt6ct/qsspage.cpp
index 28c97aafec8d94572a998d01bc73ebdf5260ddde..fd04b2d0c4a35acceae53f962b6f1f00ef8e4334 100644
--- a/src/qt6ct/qsspage.cpp
+++ b/src/qt6ct/qsspage.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct/qsspage.h b/src/qt6ct/qsspage.h
index 91c5dcb2a77dadd9b93d6f355d7cb2827120b0af..f5a251c0219877b404f4a08dcdc390569fdcdce4 100644
--- a/src/qt6ct/qsspage.h
+++ b/src/qt6ct/qsspage.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct/qt6ct.cpp b/src/qt6ct/qt6ct.cpp
index deea773fb24f9e8c388a3a3b808bf307503fa8ef..a13e3f894c3c6d35decee6bf929e21d80665bfb4 100644
--- a/src/qt6ct/qt6ct.cpp
+++ b/src/qt6ct/qt6ct.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct/qt6ct.h b/src/qt6ct/qt6ct.h
index feb3306b3379fbd9040e9cbb07f55bd317ab1c00..7d388e6338c0cb4a518a5bc0478cbd15f43a7f7b 100644
--- a/src/qt6ct/qt6ct.h
+++ b/src/qt6ct/qt6ct.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct/tabpage.cpp b/src/qt6ct/tabpage.cpp
index 62db6737284ef699a90e58a2bbabe1cdee45bb85..6a06dbbf2846bf81701b4bf0796b59d5c340e35f 100644
--- a/src/qt6ct/tabpage.cpp
+++ b/src/qt6ct/tabpage.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
diff --git a/src/qt6ct/tabpage.h b/src/qt6ct/tabpage.h
index 9e8ec0cd7631e2cfcca8bda06163a4ca7f249888..acdaa880ab1585f4a2549352eb2b37295b4c1f81 100644
--- a/src/qt6ct/tabpage.h
+++ b/src/qt6ct/tabpage.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, Ilya Kotov <forkotov02@ya.ru>
+ * Copyright (c) 2020-2021, Ilya Kotov <forkotov02@ya.ru>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are