diff --git a/CHANGES.md b/CHANGES.md
index ad29f97b..6f59c7bb 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -4,12 +4,15 @@ Notable changes between versions.
 
 ## Latest
 
+## v1.31.1
+
 * Kubernetes [v1.31.1](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.31.md#v1311)
 * Update flannel from v0.25.5 to [v0.25.6](https://github.com/flannel-io/flannel/releases/tag/v0.25.6)
 
 ### Google
 
 * Add `controller_disk_type` and `worker_disk_type` variables ([#1513](https://github.com/poseidon/typhoon/pull/1513))
+* Add explicit `region` field to regional worker instance templates ([#1524](https://github.com/poseidon/typhoon/pull/1524))
 
 ## v1.31.0
 
diff --git a/google-cloud/fedora-coreos/kubernetes/workers/workers.tf b/google-cloud/fedora-coreos/kubernetes/workers/workers.tf
index 86f7ce61..043d445f 100644
--- a/google-cloud/fedora-coreos/kubernetes/workers/workers.tf
+++ b/google-cloud/fedora-coreos/kubernetes/workers/workers.tf
@@ -62,6 +62,7 @@ resource "google_compute_region_instance_template" "worker" {
   name_prefix  = "${var.name}-worker-"
   description  = "${var.name} worker instance template"
   machine_type = var.machine_type
+  region       = var.region
 
   metadata = {
     user-data = data.ct_config.worker.rendered
diff --git a/google-cloud/flatcar-linux/kubernetes/workers/workers.tf b/google-cloud/flatcar-linux/kubernetes/workers/workers.tf
index 3d971c04..a83bdd0d 100644
--- a/google-cloud/flatcar-linux/kubernetes/workers/workers.tf
+++ b/google-cloud/flatcar-linux/kubernetes/workers/workers.tf
@@ -62,6 +62,7 @@ resource "google_compute_region_instance_template" "worker" {
   name_prefix  = "${var.name}-worker-"
   description  = "Worker Instance template"
   machine_type = var.machine_type
+  region       = var.region
 
   metadata = {
     user-data = data.ct_config.worker.rendered