# 2018-07-27 release

# 2018

## 2018-07-27

### Additional updates

| Title                                                                                                                                                                         | Affected Products  | Breaking change? | Category |
| ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------ | ---------------- | -------- |
| [Subscriptions no longer support modifying the `source` parameter directly](https://docs.stripe.com/changelog/2018-07-27/subscriptions-no-longer-support-modifying-source.md) | Billing            | Breaking         | api      |
| [Ending a subscription trial now uses the timestamp of that API request](https://docs.stripe.com/changelog/2018-07-27/ending-subscription-trial-uses-request-timestamp.md)    | Billing            | Breaking         | api      |
| [Coupons now use floats rather than integers to specify `percent_off`](https://docs.stripe.com/changelog/2018-07-27/coupons-use-floats-specify-percent-off.md)                | Billing, Invoicing | Breaking         | api      |
| [Stripe now validates email addresses when creating or updating customers](https://docs.stripe.com/changelog/2018-07-27/stripe-validates-email-addresses-customers.md)        | All products       | Breaking         | api      |