diff --git a/gsm.md b/gsm.md
index 227e2f5..81e2577 100644
--- a/gsm.md
+++ b/gsm.md
@@ -44,7 +44,7 @@ See examples for more details.
 
 [Recording of presentation with "how it works" description (in Polish)](https://www.youtube.com/watch?v=LtaWPe2sgRY&t=1s "YouTube").
 
-[The WUSS 2023 Conference article describing the idea](https://www.wuss.org/wuss-2023-conference-proceedings/ "Article about the idea GSM")
+[The WUSS 2023 Conference article describing the idea](https://www.lexjansen.com/wuss/2023/WUSS-2023-Paper-189.pdf "Article about the idea GSM")
 
 
 *How to use it:*