diff --git a/hushline/premium.py b/hushline/premium.py
index 049ad126..12f13a0b 100644
--- a/hushline/premium.py
+++ b/hushline/premium.py
@@ -44,7 +44,7 @@ def create_products_and_prices() -> None:
     current_app.logger.info("Creating products and prices")
 
     # Make sure the products and prices are created in Stripe
-    business_tier = db.session.query(Tier).get(BUSINESS_TIER)
+    business_tier = db.session.get(Tier, BUSINESS_TIER)
     if not business_tier:
         current_app.logger.error("Could not find business tier")
         return
@@ -104,7 +104,8 @@ def create_products_and_prices() -> None:
                 stripe_price = stripe.Price.retrieve(str(stripe_product.default_price))
                 current_app.logger.info(f"Found Stripe price for tier: {business_tier.name}")
                 business_tier.stripe_price_id = stripe_price.id
-                business_tier.monthly_amount = stripe_price.unit_amount
+                if stripe_price.unit_amount:
+                    business_tier.monthly_amount = stripe_price.unit_amount
                 db.session.add(business_tier)
                 db.session.commit()
                 found = True
@@ -189,7 +190,7 @@ def get_subscription(user: User) -> stripe.Subscription | None:
 
 
 def get_business_price_string() -> str:
-    business_tier = db.session.query(Tier).get(BUSINESS_TIER)
+    business_tier = db.session.get(Tier, BUSINESS_TIER)
     if not business_tier:
         current_app.logger.error("Could not find business tier")
         return "NA"
@@ -255,7 +256,9 @@ def handle_subscription_updated(subscription: stripe.Subscription) -> None:
 def handle_subscription_deleted(subscription: stripe.Subscription) -> None:
     # customer.subscription.deleted
 
-    user = db.session.query(User).filter_by(stripe_subscription_id=subscription.id).first()
+    user = db.session.scalars(
+        db.select(User).filter_by(stripe_subscription_id=subscription.id)
+    ).one_or_none()
     if user:
         user.tier_id = FREE_TIER
         user.stripe_subscription_id = None
@@ -282,7 +285,9 @@ def handle_invoice_created(invoice: stripe.Invoice) -> None:
 def handle_invoice_updated(invoice: stripe.Invoice) -> None:
     # invoice.updated
 
-    stripe_invoice = db.session.query(StripeInvoice).filter_by(invoice_id=invoice.id).first()
+    stripe_invoice = db.session.scalars(
+        db.select(StripeInvoice).filter_by(invoice_id=invoice.id)
+    ).one_or_none()
     if stripe_invoice:
         stripe_invoice.total = invoice.total
         stripe_invoice.status = StripeInvoiceStatusEnum(invoice.status)