diff --git a/terraform/main.tf b/terraform/main.tf
index 59cc1b3..e8dff2e 100644
--- a/terraform/main.tf
+++ b/terraform/main.tf
@@ -23,7 +23,7 @@ variable "worker_count" {
 
 # create cloud vm
 resource "digitalocean_droplet" "minitwit-swarm-leader" {
-  image = "docker-18-04"
+  image = "docker-22-04"
   name = "minitwit-swarm-leader"
   region = var.region
   size = "s-1vcpu-1gb"
@@ -86,7 +86,7 @@ resource "digitalocean_droplet" "minitwit-swarm-manager" {
   # number of vms to create
   count = var.manager_count
 
-  image = "docker-18-04"
+  image = "docker-22-04"
   name = "minitwit-swarm-manager-${count.index}"
   region = var.region
   size = "s-1vcpu-1gb"
@@ -139,7 +139,7 @@ resource "digitalocean_droplet" "minitwit-swarm-worker" {
   # number of vms to create
   count = var.worker_count
 
-  image = "docker-18-04"
+  image = "docker-22-04"
   name = "minitwit-swarm-worker-${count.index}"
   region = var.region
   size = "s-1vcpu-1gb"