diff --git a/.github/workflows/testinfra-ami-build.yml b/.github/workflows/testinfra-ami-build.yml
index c337e6e47..0363eff7e 100644
--- a/.github/workflows/testinfra-ami-build.yml
+++ b/.github/workflows/testinfra-ami-build.yml
@@ -67,7 +67,7 @@ jobs:
         uses: aws-actions/configure-aws-credentials@v4
         with:
           role-to-assume: ${{ secrets.DEV_AWS_ROLE }}
-          aws-region: "us-east-1"
+          aws-region: "ap-southeast-1"
           output-credentials: true
           role-duration-seconds: 7200
 
diff --git a/amazon-arm64-nix.pkr.hcl b/amazon-arm64-nix.pkr.hcl
index f625ac4af..86944a323 100644
--- a/amazon-arm64-nix.pkr.hcl
+++ b/amazon-arm64-nix.pkr.hcl
@@ -15,7 +15,7 @@ variable "ami_name" {
 
 variable "ami_regions" {
   type    = list(string)
-  default = ["ap-southeast-2"]
+  default = ["ap-southeast-1"]
 }
 
 variable "ansible_arguments" {
diff --git a/development-arm.vars.pkr.hcl b/development-arm.vars.pkr.hcl
index 6772bf6d0..3a07e0b53 100644
--- a/development-arm.vars.pkr.hcl
+++ b/development-arm.vars.pkr.hcl
@@ -1,7 +1,7 @@
 arch = "arm64"
-ami_regions = ["us-east-1"]
+ami_regions = ["ap-southeast-1"]
 environment = "dev"
 instance-type = "c6g.4xlarge"
-region= "us-east-1"
+region= "ap-southeast-1"
 ubuntu-2004 = "ami-0b49a4a6e8e22fa16"
 
diff --git a/stage2-nix-psql.pkr.hcl b/stage2-nix-psql.pkr.hcl
index 243e5e2e4..344ced288 100644
--- a/stage2-nix-psql.pkr.hcl
+++ b/stage2-nix-psql.pkr.hcl
@@ -5,7 +5,7 @@ variable "profile" {
 
 variable "ami_regions" {
   type    = list(string)
-  default = ["ap-southeast-2"]
+  default = ["ap-southeast-1"]
 }
 
 variable "environment" {