diff --git a/.github/actions/deploy-proxy/action.yml b/.github/actions/deploy-proxy/action.yml
index 13bdc494f..c07a1c03f 100644
--- a/.github/actions/deploy-proxy/action.yml
+++ b/.github/actions/deploy-proxy/action.yml
@@ -12,7 +12,7 @@ inputs:
     default: https://github.com/GSA-TTS/cg-egress-proxy.git
   proxy_version:
     description: git ref to be deployed
-    default: main
+    default: cflinuxfs4-deploy
 runs:
   using: composite
   steps:
diff --git a/manifest.yml b/manifest.yml
index 021f934da..44dd270c4 100644
--- a/manifest.yml
+++ b/manifest.yml
@@ -2,6 +2,7 @@
 applications:
   - name: notify-api-((env))
     buildpack: python_buildpack
+    stack: cflinuxfs4
     instances: 1
     disk_quota: 1G
     routes: