diff --git a/COPYING b/COPYING
index 5db654a8b0759f8ae3cbab8faf540251433e33b1..11087d36e9dad41557403a7d3e445116968d448e 100644
--- a/COPYING
+++ b/COPYING
@@ -1,6 +1,8 @@
 © 2020 Philip Haas, credativ GmbH <philip.haas@credativ.de>
 © 2020 Dominik George, Teckids e.V. <dominik.george@teckids.org>
 
+Optimisation of SVGs by mirabilos <thorsten.glaser@teckids.org>
+
 Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)