diff --git a/.github/workflows/pull_request.yaml b/.github/workflows/pull_request.yaml
index 6996a69..5652671 100644
--- a/.github/workflows/pull_request.yaml
+++ b/.github/workflows/pull_request.yaml
@@ -35,4 +35,15 @@ jobs:
       - name: Run functional tests
         run: echo "Running functional tests against ${{ needs.deploy-ephemeral.outputs.SERVICE_URL }}"
         env:
-          SERVICE_URL: ${{ needs.deploy-ephemeral.outputs.SERVICE_URL }}
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+          SERVICE_URL: ${{ needs.deploy-ephemeral.outputs.SERVICE_URL }}
+  
+  teardown-ephemeral-env:
+    uses: ./.github/workflows/stack-delete.yaml
+    needs: run-functional-tests
+    permissions:
+      id-token: write
+      contents: read
+    secrets:
+      AWS_DEPLOYER_ROLE: ${{ secrets.AWS_DEPLOYER_ROLE }}
+    with:
+      ENVIRONMENT: ${{ github.actor }}-${{ github.event.pull_request.number }}
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