diff --git a/docs/book/src/developer/guide.md b/docs/book/src/developer/guide.md
index f681fb820ca1..8e2e3ed03334 100644
--- a/docs/book/src/developer/guide.md
+++ b/docs/book/src/developer/guide.md
@@ -229,6 +229,7 @@ CAPI components and architecture
 * [Cluster API Deep Dive - Dec 2020 v1alpha3](https://youtu.be/npFO5Fixqcc)
 * [Cluster API Deep Dive - Sept 2020 v1alpha3](https://youtu.be/9SfuQQeeK6Q)
 * [Declarative Kubernetes Clusters with Cluster API - Oct 2020 v1alpha3](https://youtu.be/i6OWn2zRsZg)
+* [TGI Kubernetes 178: ClusterAPI - ClusterClass & Managed Topologies - Dec 2020 v1beta1](https://www.youtube.com/watch?v=U9CDND0nzRI&list=PL7bmigfV0EqQzxcNpmcdTJ9eFRPBe-iZa&index=5)
 
 Code walkthrough