diff --git a/debian/copyright b/debian/copyright
index 2587073..ef2688b 100644
--- a/debian/copyright
+++ b/debian/copyright
@@ -115,6 +115,10 @@
 Copyright: 2009, Maksim Golovkin (m4ks1k@gmail.com)
 License: GPL-2+
 
+Files: src/filter/autothresh0ld/*
+Copyright: 2025, Cynthia <cynthia2048@proton.me>
+License: GPL-2+
+
 Files: src/filter/baltan/*
  src/filter/vertigo/*
 Copyright: 2001, FUKUCHI Kentarou
@@ -267,7 +271,7 @@
 License: GPL-2+
 
 Files: src/filter/water/*
-Copyright: 2000-2007, Denis Rojo <jaromil@dyne.org>
+Copyright: 2000-2025, Denis Rojo <jaromil@dyne.org>
 License: GPL-2