diff --git a/LICENSE.txt b/LICENSE.txt
index 7502e0c..a083b6e 100644
--- a/LICENSE.txt
+++ b/LICENSE.txt
@@ -1,4 +1,4 @@
-Copyright 2000      by Dominique Unruh  <unruh@ut.ee>
+Copyright 2000      by Dominique Unruh  <latex.ucs.0vm69c@x.unruh.de>
 Copyright 2011-2013 by Wolfgang Jeltsch <wolfgang@cs.ioc.ee>
 Copyright 2022-2024 by David Carlisle   <david.carlisle@latex-project.org>
 
diff --git a/README.txt b/README.txt
index 17ef84e..daf751e 100644
--- a/README.txt
+++ b/README.txt
@@ -28,7 +28,7 @@ repository, can be found at
 
 =========
 
-(C) 2000       by Dominique Unruh  <unruh@ut.ee>
+(C) 2000       by Dominique Unruh  <latex.ucs.0vm69c@x.unruh.de>
 (C) 2011--2013 by Wolfgang Jeltsch <wolfgang@cs.ioc.ee>
 (C) 2022--2024    David Carlisle david.carlisle@latex-project.org
 
diff --git a/latexout.pl b/latexout.pl
index 78e80bb..e24d339 100755
--- a/latexout.pl
+++ b/latexout.pl
@@ -20,7 +20,7 @@ =head1 BUGS
 
 =head1 AUTHOR
 
-Dominique Unruh <I<unruh@ut.ee>>.
+Dominique Unruh <I<latex.ucs.0vm69c@x.unruh.de>>.
 
 =head1 SEE ALSO
 
diff --git a/makeunidef.pl b/makeunidef.pl
index 2a8dc31..724c994 100755
--- a/makeunidef.pl
+++ b/makeunidef.pl
@@ -185,7 +185,7 @@ =head1 REPORTING BUGS
 
 =head1 AUTHOR
 
-Dominique Unruh <I<unruh@ut.ee>>.
+Dominique Unruh <I<latex.ucs.0vm69c@x.unruh.de>>.
 
 =head1 MAINTAINER
 
diff --git a/ucs.ins b/ucs.ins
index 345494c..33adcfb 100644
--- a/ucs.ins
+++ b/ucs.ins
@@ -3,7 +3,7 @@
 
 \preamble
 
-Copyright 2001 Dominique Unruh  <unruh@ut.ee>
+Copyright 2001 Dominique Unruh  <latex.ucs.0vm69c@x.unruh.de>
 Copyright 2013 Wolfgang Jeltsch <wolfgang@cs.ioc.ee>
 Copyright 2022 David Carlisle https://github.com/LaTeX-Package-Repositories/ucs