diff --git a/data/courses.yml b/data/courses.yml
index 29b265a..7b7402d 100644
--- a/data/courses.yml
+++ b/data/courses.yml
@@ -21,6 +21,7 @@
     - IIC2113
   links:
     telegram: https://t.me/joinchat/GeR-5BUmKQlmmH-Rus8tCA
+    "telegram (sec 2 2023-2)": https://t.me/+mspJTmc8huU0Mzgx
 - name: Estructuras de Datos y Algoritmos
   abbr: EDD
   codes: