diff --git a/src/13_semiconductors.md b/src/13_semiconductors.md
index 9de6f0daf3f2f7fc0424c1f69475b5fc190dbf03..13ce5d44517bf1d1d96fbbfb9558581e44888d90 100644
--- a/src/13_semiconductors.md
+++ b/src/13_semiconductors.md
@@ -41,7 +41,7 @@ _(based on chapters 17–18 of the book)_
 
 ??? info "Lecture video"
 
-    <iframe width="100%" height="315" src="https://www.youtube-nocookie.com/embed/Or50p4-HRiA" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+    <iframe width="100%" height="315" src="https://www.youtube-nocookie.com/embed/IxDp_JAtBQs" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
 
 ## Review of band structure properties