diff --git a/readme.md b/readme.md
index 81a938e..bbc317c 100644
--- a/readme.md
+++ b/readme.md
@@ -71,7 +71,7 @@ To build a release binary, add `RELEASE=1`.
 
 ### Copyright
 
-© 2020 Ian Karlsson
+© 2020-2021 Ian Karlsson
 
 	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
diff --git a/src/main_window.cpp b/src/main_window.cpp
index 32080d4..b850c45 100644
--- a/src/main_window.cpp
+++ b/src/main_window.cpp
@@ -142,7 +142,7 @@ void About_Window::display()
 	ImGui::Begin(window_id.c_str(), &active, ImGuiWindowFlags_AlwaysAutoResize);
 	ImGui::Text("MML (Music Macro Language) editor and player.");
 	ImGui::Text("%s", version_string);
-	ImGui::Text("Copyright 2020 Ian Karlsson.");
+	ImGui::Text("Copyright 2020-2021 Ian Karlsson.");
 	ImGui::Separator();
 	ImGui::Text("Source code repository and issue reporting:");
 	ImGui::Text("https://github.com/superctr/mmlgui");