diff --git a/science/math/people/savvateev.txt b/science/math/people/savvateev.txt
index 7a61b6d8b..e2d05660c 100644
--- a/science/math/people/savvateev.txt
+++ b/science/math/people/savvateev.txt
@@ -17,6 +17,9 @@ https://www.youtube.com/c/PunkMathematics
     ludmila z
     https://www.youtube.com/channel/UC3XSyhxuKYZzzqdECAkJLIw/playlists
 
+2025
+NativeSchool - Aurora - Biryukov - Savvateev - EDU Degradation of 48:43
+    https://www.youtube.com/watch?v=F9rrOfgtpjM
 2024
 NativeSchool - Denis - Learning Motivation Alchemy of 50:49
     https://www.youtube.com/watch?v=1jfe95Yrxnk