diff --git a/apps/pre-award/copilot/environments/addons/application-deadline-reminder.yml b/apps/pre-award/copilot/environments/addons/application-deadline-reminder.yml
index b242524a..b42bdf9e 100644
--- a/apps/pre-award/copilot/environments/addons/application-deadline-reminder.yml
+++ b/apps/pre-award/copilot/environments/addons/application-deadline-reminder.yml
@@ -54,15 +54,15 @@ Resources:
       Environment:
         Variables:
           ACCOUNTS_ENDPOINT: /accounts
-          ACCOUNT_STORE_API_HOST: http://fsd-account-store.${Env}.pre-award.local:8080
+          ACCOUNT_STORE_API_HOST: !Sub http://fsd-account-store.${Env}.pre-award.local:8080
           APPLICATIONS_ENDPOINT: /applications
           APPLICATION_REMINDER_STATUS: /funds/{round_id}/application_reminder_status?status=true
-          APPLICATION_STORE_API_HOST: http://fsd-application-store.${Env}.pre-award.local:8080
+          APPLICATION_STORE_API_HOST: !Sub http://fsd-application-store.${Env}.pre-award.local:8080
           FUND_ENDPOINT: /funds/{fund_id}
           FUNDS_ENDPOINT: /funds
           FUND_ROUNDS_ENDPOINT: /funds/{fund_id}/rounds
           FUND_STORE_API_HOST: !Sub http://fsd-fund-store.${Env}.pre-award.local:8080
-          NOTIFICATION_SERVICE_API_HOST: http://fsd-notification.${Env}.pre-award.local:8080
+          NOTIFICATION_SERVICE_API_HOST: !Sub http://fsd-notification.${Env}.pre-award.local:8080
           NOTIFY_TEMPLATE_APPLICATION_DEADLINE_REMINDER: APPLICATION_DEADLINE_REMINDER
           SEND_ENDPOINT: /send
       VpcConfig: