diff --git a/.github/scripts/deploy-app-engine.sh b/.github/scripts/deploy-app-engine.sh
deleted file mode 100755
index f3733dec..00000000
--- a/.github/scripts/deploy-app-engine.sh
+++ /dev/null
@@ -1,47 +0,0 @@
-#!/bin/bash
-
-# Deploy to Google Cloud App Engine using pre-built Docker image
-set -e
-
-# Get required environment variables
-IMAGE_NAME="${IMAGE_NAME}"
-IMAGE_TAG="${IMAGE_TAG}"
-SERVICE_ACCOUNT="${SERVICE_ACCOUNT}"
-APP_YAML_PATH="${APP_YAML_PATH}"
-
-if [ -z "$IMAGE_NAME" ] || [ -z "$IMAGE_TAG" ] || [ -z "$SERVICE_ACCOUNT" ] || [ -z "$APP_YAML_PATH" ]; then
-    echo "Error: Required environment variables not set"
-    echo "IMAGE_NAME: $IMAGE_NAME"
-    echo "IMAGE_TAG: $IMAGE_TAG"
-    echo "SERVICE_ACCOUNT: $SERVICE_ACCOUNT"
-    echo "APP_YAML_PATH: $APP_YAML_PATH"
-    exit 1
-fi
-
-echo "Deploying pre-built Docker image from Google Artifact Registry to App Engine..."
-echo "Image: $IMAGE_NAME:$IMAGE_TAG"
-echo "Version: $IMAGE_TAG"
-echo "Service Account: $SERVICE_ACCOUNT"
-echo "App YAML: $APP_YAML_PATH"
-
-# Check that Auth0 environment variables are set
-if [ -z "$AUTH0_ADDRESS_NO_DOMAIN" ] || [ -z "$AUTH0_AUDIENCE_NO_DOMAIN" ]; then
-    echo "Error: Auth0 environment variables not set"
-    exit 1
-fi
-
-echo "Substituting environment variables in app.yaml..."
-TEMP_APP_YAML=$(mktemp)
-envsubst < "$APP_YAML_PATH" > "$TEMP_APP_YAML"
-
-# Deploy to App Engine using the substituted app.yaml
-gcloud app deploy "$TEMP_APP_YAML" \
-    --image-url="$IMAGE_NAME:$IMAGE_TAG" \
-    --version="$IMAGE_TAG" \
-    --service-account="$SERVICE_ACCOUNT" \
-    --quiet
-
-# Clean up
-rm "$TEMP_APP_YAML"
-
-echo "App Engine deployment completed successfully"
\ No newline at end of file
diff --git a/.github/workflows/deploy-production.yml b/.github/workflows/deploy-production.yml
index d83ff77a..a2f7c1c5 100644
--- a/.github/workflows/deploy-production.yml
+++ b/.github/workflows/deploy-production.yml
@@ -1,4 +1,4 @@
-name: 'Deployment step 2: Deploy to Production'
+name: 'Deployment step 2: Deploy to Production test'
 
 on:
   push:
@@ -9,7 +9,7 @@ env:
   ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION: true
   PROJECT_ID: policyengine-household-api
   REGION: us-central1
-  SERVICE_NAME: policyengine-household-api
+  SERVICE_NAME: default
   IMAGE_NAME: us-central1-docker.pkg.dev/policyengine-household-api/policyengine-household-api/policyengine-household-api
   PYTHON_VERSION: '3.12'
   IMAGE_VERSION: python312-latest # Cannot use . in Artifact Registry versions
@@ -133,34 +133,24 @@ jobs:
         with:
           credentials_json: ${{ secrets.GCP_SA_KEY }}
 
-      - name: Log in to Google Artifact Registry for image verification
-        uses: docker/login-action@v2
+      - id: deploy
+        name: Deploy to App Engine
+        uses: google-github-actions/deploy-appengine@v2
         with:
-          registry: us-central1-docker.pkg.dev
-          username: _json_key
-          password: ${{ secrets.GCP_SA_KEY }}
-
-      - name: Deploy to App Engine
-        env:
-          IMAGE_NAME: ${{ env.IMAGE_NAME }}
-          IMAGE_TAG: ${{ env.IMAGE_VERSION }}
-          SERVICE_ACCOUNT: github-deployment@policyengine-household-api.iam.gserviceaccount.com
-          APP_YAML_PATH: ./gcp/policyengine_household_api/app.yaml
-          AUTH0_ADDRESS_NO_DOMAIN: ${{ secrets.AUTH0_ADDRESS_NO_DOMAIN }}
-          AUTH0_AUDIENCE_NO_DOMAIN: ${{ secrets.AUTH0_AUDIENCE_NO_DOMAIN }}
-          USER_ANALYTICS_DB_USERNAME: ${{ secrets.USER_ANALYTICS_DB_USERNAME }}
-          USER_ANALYTICS_DB_PASSWORD: ${{ secrets.USER_ANALYTICS_DB_PASSWORD }}
-          USER_ANALYTICS_DB_CONNECTION_NAME: ${{ secrets.USER_ANALYTICS_DB_CONNECTION_NAME }}
-          ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
-        run: .github/scripts/deploy-app-engine.sh
+          deliverables: "./gcp/policyengine_household_api/app.yaml"
+          image_url: ${{ env.IMAGE_NAME }}:${{ env.IMAGE_VERSION }}
+          promote: false  # Don't move traffic over until full successful deploy
+          flags: "--quiet"
+          env_vars: |-
+            AUTH0_ADDRESS_NO_DOMAIN=${{ secrets.AUTH0_ADDRESS_NO_DOMAIN }}
+            AUTH0_AUDIENCE_NO_DOMAIN=${{ secrets.AUTH0_AUDIENCE_NO_DOMAIN }}
+            USER_ANALYTICS_DB_USERNAME=${{ secrets.USER_ANALYTICS_DB_USERNAME }}
+            USER_ANALYTICS_DB_PASSWORD=${{ secrets.USER_ANALYTICS_DB_PASSWORD }}
+            USER_ANALYTICS_DB_CONNECTION_NAME=${{ secrets.USER_ANALYTICS_DB_CONNECTION_NAME }}
+            ANTHROPIC_API_KEY=${{ secrets.ANTHROPIC_API_KEY }}
 
       - name: Set traffic to new version
         env:
           SERVICE_NAME: ${{ env.SERVICE_NAME }}
-          VERSION: ${{ env.IMAGE_VERSION }}
+          VERSION: ${{ steps.deploy.outputs.version }}
         run: .github/scripts/set-traffic.sh
-
-      - name: Verify deployment
-        env:
-          SERVICE_NAME: ${{ env.SERVICE_NAME }}
-        run: .github/scripts/verify-deployment.sh
diff --git a/changelog_entry.yaml b/changelog_entry.yaml
index e69de29b..d215e4b5 100644
--- a/changelog_entry.yaml
+++ b/changelog_entry.yaml
@@ -0,0 +1,5 @@
+- bump: patch
+  changes:
+    changed:
+    - Replaced custom GCP deploy script with official Google action.
+    - Re-enabled itemized deductions to prevent UK service outage.
\ No newline at end of file
diff --git a/gcp/policyengine_household_api/app.yaml b/gcp/policyengine_household_api/app.yaml
index 763ba6c2..ba8a2f74 100644
--- a/gcp/policyengine_household_api/app.yaml
+++ b/gcp/policyengine_household_api/app.yaml
@@ -11,7 +11,7 @@ automatic_scaling:
   cpu_utilization:
     target_utilization: 0.8
 readiness_check:
-  app_start_timeout_sec: 1800  # Maximum allowed (30 minutes)
+  app_start_timeout_sec: 1800
   check_interval_sec: 30
   timeout_sec: 10
   failure_threshold: 5
@@ -21,11 +21,4 @@ liveness_check:
   check_interval_sec: 30
   timeout_sec: 10
   failure_threshold: 5
-  success_threshold: 1
-env_variables:
-  AUTH0_ADDRESS_NO_DOMAIN: ${AUTH0_ADDRESS_NO_DOMAIN}
-  AUTH0_AUDIENCE_NO_DOMAIN: ${AUTH0_AUDIENCE_NO_DOMAIN}
-  USER_ANALYTICS_DB_USERNAME: ${USER_ANALYTICS_DB_USERNAME}
-  USER_ANALYTICS_DB_PASSWORD: ${USER_ANALYTICS_DB_PASSWORD}
-  USER_ANALYTICS_DB_CONNECTION_NAME: ${USER_ANALYTICS_DB_CONNECTION_NAME}
-  ANTHROPIC_API_KEY: ${ANTHROPIC_API_KEY}
+  success_threshold: 1
\ No newline at end of file
diff --git a/policyengine_household_api/country.py b/policyengine_household_api/country.py
index ccf43866..062ad7d3 100644
--- a/policyengine_household_api/country.py
+++ b/policyengine_household_api/country.py
@@ -335,10 +335,6 @@ def calculate(
             situation=household,
         )
 
-        simulation.tax_benefit_system.parameters.gov.simulation.branch_to_determine_itemization.update(
-            start=2020, value=False
-        )
-
         household = json.loads(json.dumps(household))
 
         # Run tracer on household