diff --git a/COPYING b/COPYING
index 59ef3fdfa..4c8dcd883 100644
--- a/COPYING
+++ b/COPYING
@@ -1,5 +1,5 @@
-Copyright (c) 2011-2019, Lukas Weber <laochailan@web.de>.
-Copyright (c) 2012-2019, Andrei Alexeyev <akari@taisei-project.org>.
+Copyright (c) 2011-2024, Lukas Weber <laochailan@web.de>.
+Copyright (c) 2012-2024, Andrei Alexeyev <akari@taisei-project.org>.
 
 Taisei Project is a free unofficial fan-made game based on the original Tōhō
 Project series by ZUN.
diff --git a/misc/Info.plist.in b/misc/Info.plist.in
index 0f3b258cb..e246573b9 100644
--- a/misc/Info.plist.in
+++ b/misc/Info.plist.in
@@ -29,6 +29,6 @@
     <key>NSHighResolutionCapable</key>
     <string>YES</string>
     <key>NSHumanReadableCopyright</key>
-    <string>© 2011-2019, Taisei Project</string>
+    <string>© 2011-2024, Taisei Project</string>
 </dict>
 </plist>