diff --git a/slides/kube-fullday.yml b/slides/kube-fullday.yml
index b68c6da2..dde46797 100644
--- a/slides/kube-fullday.yml
+++ b/slides/kube-fullday.yml
@@ -10,7 +10,7 @@ gitrepo: github.com/jpetazzo/container.training
 slides: https://2020-10-docberlin.container.training/
 
 slidenumberprefix:
-  <a href="https://container.training/">container.training</a>
+  Slides → <a href="https://2020-10-docberlin.container.training/">2020-10-docberlin.container.training</a>
   &mdash;
   <a href="https://twitter.com/jpetazzo">@jpetazzo</a>
   &mdash;
diff --git a/slides/shared/prereqs.md b/slides/shared/prereqs.md
index 78c9b079..307b1d2b 100644
--- a/slides/shared/prereqs.md
+++ b/slides/shared/prereqs.md
@@ -74,6 +74,8 @@ class: in-person
 
 - Each person gets a private cluster of cloud VMs (not shared with anybody else)
 
+- Get yours on https://2020-10-docberlin.container.training/vms
+
 - They'll remain up for the duration of the workshop
 
 - You should have a little card with login+password+IP addresses