diff --git a/digital-ocean/container-linux/kubernetes/variables.tf b/digital-ocean/container-linux/kubernetes/variables.tf
index 0a4674f9..d0418156 100644
--- a/digital-ocean/container-linux/kubernetes/variables.tf
+++ b/digital-ocean/container-linux/kubernetes/variables.tf
@@ -27,8 +27,8 @@ variable "controller_count" {
 
 variable "controller_type" {
   type        = "string"
-  default     = "2gb"
-  description = "Digital Ocean droplet size (e.g. 2gb (min), 4gb, 8gb)."
+  default     = "s-2vcpu-2gb"
+  description = "Digital Ocean droplet size (e.g. s-2vcpu-2gb, s-2vcpu-4gb, s-4vcpu-8gb)."
 }
 
 variable "worker_count" {
@@ -39,8 +39,8 @@ variable "worker_count" {
 
 variable "worker_type" {
   type        = "string"
-  default     = "512mb"
-  description = "Digital Ocean droplet size (e.g. 512mb, 1gb, 2gb, 4gb)"
+  default     = "s-1vcpu-1gb"
+  description = "Digital Ocean droplet size (e.g. s-1vcpu-1gb, s-1vcpu-2gb, s-2vcpu-2gb)"
 }
 
 variable "ssh_fingerprints" {
diff --git a/docs/digital-ocean.md b/docs/digital-ocean.md
index 7900b855..60bd8fcb 100644
--- a/docs/digital-ocean.md
+++ b/docs/digital-ocean.md
@@ -106,9 +106,9 @@ module "digital-ocean-nemo" {
   cluster_name     = "nemo"
   image            = "coreos-stable"
   controller_count = 1
-  controller_type  = "2gb"
+  controller_type  = "s-2vcpu-2gb"
   worker_count     = 2
-  worker_type      = "512mb"
+  worker_type      = "s-1vcpu-1gb"
   ssh_fingerprints = ["d7:9d:79:ae:56:32:73:79:95:88:e3:a2:ab:5d:45:e7"]
 
   # output assets dir
@@ -262,16 +262,18 @@ If you uploaded an SSH key to DigitalOcean (not required), find the fingerprint
 |:-----|:------------|:--------|:--------|
 | image | OS image for droplets | "coreos-stable" | coreos-stable, coreos-beta, coreos-alpha |
 | controller_count | Number of controllers (i.e. masters) | 1 | 1 |
-| controller_type | Digital Ocean droplet size | 2gb | 2gb (min), 4gb, 8gb |
+| controller_type | Digital Ocean droplet size | s-2vcpu-2gb | s-2vcpu-2gb, s-2vcpu-4gb, s-4vcpu-8gb, ... |
 | worker_count | Number of workers | 1 | 3 |
-| worker_type | Digital Ocean droplet size | 512mb | 512mb, 1gb, 2gb, 4gb |
+| worker_type | Digital Ocean droplet size | s-1vcpu-1gb | s-1vcpu-1gb, s-1vcpu-2gb, s-2vcpu-2gb, ... |
 | networking | Choice of networking provider | "flannel" | "flannel" |
 | pod_cidr | CIDR range to assign to Kubernetes pods | "10.2.0.0/16" | "10.22.0.0/16" |
 | service_cidr | CIDR range to assign to Kubernetes services | "10.3.0.0/16" | "10.3.0.0/24" |
 | cluster_domain_suffix | FQDN suffix for Kubernetes services answered by kube-dns. | "cluster.local" | "k8s.example.com" |
 
+You can see all valid droplet sizes [on DigitalOcean's website](https://developers.digitalocean.com/documentation/changelog/api-v2/new-size-slugs-for-droplet-plan-changes/) or by [using their `doctl` command-line tool](https://github.com/digitalocean/doctl) via `doctl compute size list`.
+
 !!! warning
-    Do not choose a `controller_type` smaller than `2gb`. The `1gb` droplet is not sufficient for running a controller and bootstrapping will fail.
+    Do not choose a `controller_type` smaller than 2GB. Smaller droplets are not sufficient for running a controller and bootstrapping will fail.
 
 !!! bug
     Digital Ocean firewalls do not yet support the IP tunneling (IP in IP) protocol used by Calico. You can try using "calico" for `networking`, but it will only work if the cloud firewall is removed (unsafe).