diff --git a/child/math/people/edu/rukshin.txt b/child/math/people/edu/rukshin.txt
index de3ee581e..cf8a70bc6 100644
--- a/child/math/people/edu/rukshin.txt
+++ b/child/math/people/edu/rukshin.txt
@@ -24,5 +24,6 @@ EssenceOfTime - Rukshin - Distant of 1:15:02
 PoznyakovaForum - Rukshin - Smart Girls Club of 33:02
     https://www.youtube.com/watch?v=UwUP5VcANXw
 2018
-ConstantinSemin - Rukshin of 1:37:13
+ConstantinSemin - Rukshin 51:00 of 1:37:13
     https://www.youtube.com/watch?v=BA7EdDbqDHA
+    https://www.youtube.com/watch?v=8LUX0drb1NM