diff --git a/teachings.json b/teachings.json
index ba52d47..f1524b4 100644
--- a/teachings.json
+++ b/teachings.json
@@ -909,7 +909,7 @@
   {
     "name": "Artificial Intelligence, Blockchain e criptovalute nello sviluppo software",
     "url": "artificial-intelligence-blockchain-e-criptovalute-nello-sviluppo-software",
-    "chat": "@AIBC_unibo",
+    "chat": "https://t.me/+FrU7IhMlaZoyZDZk",
     "website": "495981",
     "professors": [
       "giancarlo.succi"