diff --git a/12-deploying-containers/kubernetes/Makefile b/12-deploying-containers/kubernetes/Makefile
index 83b10b1..e7f6bac 100644
--- a/12-deploying-containers/kubernetes/Makefile
+++ b/12-deploying-containers/kubernetes/Makefile
@@ -1,12 +1,12 @@
 .PHONY: deploy-traefik
 deploy-traefik:
 	-helm repo add traefik https://traefik.github.io/charts
-	helm upgrade --install -n traefik --create-namespace traefik traefik/traefik
+	helm upgrade --install -n traefik --create-namespace traefik traefik/traefik --version 20.8.0
 
 .PHONY: deploy-postgres
 deploy-postgres:
 	-helm repo add bitnami https://charts.bitnami.com/bitnami
-	helm upgrade --install db bitnami/postgresql --set auth.postgresPassword=foobarbaz
+	helm upgrade --install db bitnami/postgresql --set auth.postgresPassword=foobarbaz --version 12.1.15
 
 .PHONY: deploy-app
 deploy-app: