diff --git a/.github/workflows/terraform-standard-iac-pipeline-aws-account-matrix.yaml b/.github/workflows/terraform-standard-iac-pipeline-aws-account-matrix.yaml
index 22eefd98..50061d05 100644
--- a/.github/workflows/terraform-standard-iac-pipeline-aws-account-matrix.yaml
+++ b/.github/workflows/terraform-standard-iac-pipeline-aws-account-matrix.yaml
@@ -16,6 +16,7 @@ on:
 env:
   BASE_DIR: iac-template/terraform-hcl-standard/aws-cloud/component/
   DEPLOY_ACTION: ${{ github.event.inputs.deploy_action || 'plan' }}
+  AWS_REGION: ap-northeast-1
   AWS_ROLE_ARN: arn:aws:iam::950604983695:role/GithubAction_IAC_Deploy_Role
 
 jobs: