diff --git a/src/hardware/hw_batching.c b/src/hardware/hw_batching.c
index 3a8eef55e..0ac33d136 100644
--- a/src/hardware/hw_batching.c
+++ b/src/hardware/hw_batching.c
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2021 by Sonic Team Junior.
+// Copyright (C) 2020-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/hardware/hw_batching.h b/src/hardware/hw_batching.h
index d886dcf2a..9ccc7de3d 100644
--- a/src/hardware/hw_batching.h
+++ b/src/hardware/hw_batching.h
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2021 by Sonic Team Junior.
+// Copyright (C) 2020-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/http-mserv.c b/src/http-mserv.c
index 0b9eb2f92..f9134ba50 100644
--- a/src/http-mserv.c
+++ b/src/http-mserv.c
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2021 by James R.
+// Copyright (C) 2020-2021 by James R.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/i_threads.h b/src/i_threads.h
index 924d283c4..bc752181f 100644
--- a/src/i_threads.h
+++ b/src/i_threads.h
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2021 by James R.
+// Copyright (C) 2020-2021 by James R.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/lua_polyobjlib.c b/src/lua_polyobjlib.c
index cfd6b67d4..5d76a912d 100644
--- a/src/lua_polyobjlib.c
+++ b/src/lua_polyobjlib.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2021 by Iestyn "Monster Iestyn" Jealous.
-// Copyright (C) 2021 by Sonic Team Junior.
+// Copyright (C) 2020-2021 by Iestyn "Monster Iestyn" Jealous.
+// Copyright (C) 2020-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/lua_taglib.c b/src/lua_taglib.c
index 55abb09cd..d0cf385a9 100644
--- a/src/lua_taglib.c
+++ b/src/lua_taglib.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2021 by James R.
-// Copyright (C) 2021 by Sonic Team Junior.
+// Copyright (C) 2020-2021 by James R.
+// Copyright (C) 2020-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/m_perfstats.c b/src/m_perfstats.c
index c4b2044b3..8a99312e6 100644
--- a/src/m_perfstats.c
+++ b/src/m_perfstats.c
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2021 by Sonic Team Junior.
+// Copyright (C) 2020-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/m_perfstats.h b/src/m_perfstats.h
index 8f87146f2..71208fbc1 100644
--- a/src/m_perfstats.h
+++ b/src/m_perfstats.h
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2021 by Sonic Team Junior.
+// Copyright (C) 2020-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/mserv.c b/src/mserv.c
index f46a3d444..f64c7bea9 100644
--- a/src/mserv.c
+++ b/src/mserv.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
 // Copyright (C) 1999-2021 by Sonic Team Junior.
-// Copyright (C)      2021 by James R.
+// Copyright (C) 2020-2021 by James R.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/mserv.h b/src/mserv.h
index ff12fa1f8..7a3b3d8ec 100644
--- a/src/mserv.h
+++ b/src/mserv.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
 // Copyright (C) 1999-2021 by Sonic Team Junior.
-// Copyright (C)      2021 by James R.
+// Copyright (C) 2020-2021 by James R.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/r_patch.c b/src/r_patch.c
index ef41aa574..6827cd12c 100644
--- a/src/r_patch.c
+++ b/src/r_patch.c
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2021 by Jaime "Lactozilla" Passos.
+// Copyright (C) 2020-2021 by Jaime "Lactozilla" Passos.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/r_patch.h b/src/r_patch.h
index d4ca8e6ee..96fbb0e28 100644
--- a/src/r_patch.h
+++ b/src/r_patch.h
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2021 by Jaime "Lactozilla" Passos.
+// Copyright (C) 2020-2021 by Jaime "Lactozilla" Passos.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/r_patchrotation.c b/src/r_patchrotation.c
index a6c2b41ce..a9b4a2b8f 100644
--- a/src/r_patchrotation.c
+++ b/src/r_patchrotation.c
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2021 by Jaime "Lactozilla" Passos.
+// Copyright (C) 2020-2021 by Jaime "Lactozilla" Passos.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/r_patchrotation.h b/src/r_patchrotation.h
index c64a08366..689b7d411 100644
--- a/src/r_patchrotation.h
+++ b/src/r_patchrotation.h
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2021 by Jaime "Lactozilla" Passos.
+// Copyright (C) 2020-2021 by Jaime "Lactozilla" Passos.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/sdl/i_threads.c b/src/sdl/i_threads.c
index bf9668584..f73d00bcf 100644
--- a/src/sdl/i_threads.c
+++ b/src/sdl/i_threads.c
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2021 by James R.
+// Copyright (C) 2020-2021 by James R.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/taglist.c b/src/taglist.c
index 1b4a64ecd..28fa48c25 100644
--- a/src/taglist.c
+++ b/src/taglist.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
 // Copyright (C) 1999-2021 by Sonic Team Junior.
-// Copyright (C)      2021 by Nev3r.
+// Copyright (C) 2020-2021 by Nev3r.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/taglist.h b/src/taglist.h
index 80100f80a..146d76131 100644
--- a/src/taglist.h
+++ b/src/taglist.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
 // Copyright (C) 1999-2021 by Sonic Team Junior.
-// Copyright (C)      2021 by Nev3r.
+// Copyright (C) 2020-2021 by Nev3r.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.