diff --git a/.github/workflows/cd-cdk.yaml b/.github/workflows/cd-cdk.yaml
index a25e3ed..4d97898 100644
--- a/.github/workflows/cd-cdk.yaml
+++ b/.github/workflows/cd-cdk.yaml
@@ -35,6 +35,10 @@ on:
         description: "CloudFormation stack name (for pre-flight checks)"
         type: string
         default: ""
+      stacks:
+        description: "CDK stack selector(s) to deploy (space-separated construct ids/patterns). Default deploys every stack in the app; set per job when a multi-account app splits deploys across roles."
+        type: string
+        default: "--all"
       post-deploy-script:
         description: "Optional path to a script to run after CDK deploy (e.g. web build, S3 sync)"
         type: string
@@ -121,7 +125,7 @@ jobs:
 
       - name: CDK deploy
         working-directory: ${{ inputs.cdk-dir }}
-        run: npx -y cdk deploy --all --require-approval never
+        run: npx -y cdk deploy ${{ inputs.stacks }} --require-approval never
 
       - name: Post-deploy script
         if: ${{ inputs.post-deploy-script != '' }}