diff --git a/L3 - Stream processing with Apache Flink/refs.md b/L3 - Stream processing with Apache Flink/refs.md
index 45c8f2e..1bd8d44 100644
--- a/L3 - Stream processing with Apache Flink/refs.md	
+++ b/L3 - Stream processing with Apache Flink/refs.md	
@@ -1,3 +1,3 @@
 # Полезные ссылки по теме
 
-https://www.youtube.com/embed/zMgK_u_ELk8
\ No newline at end of file
+[![IMAGE_ALT](https://img.youtube.com/vi/zMgK_u_ELk8/0.jpg)](https://www.youtube.com/embed/zMgK_u_ELk8)