If you're a T-Mobile customer on an older plan, your bill is about to get more expensive once the $5 price hike hits in April.

T-Mobile is letting some legacy plan customers know that a price increase is coming, 9to5Google reports. Many Reddit users on r/tmobile said the carrier sent them text messages that their plans will raise by $5 per month per line starting on April 2nd.

Based on T-Mobile's communication to staff, it's unclear just which customers can expect to see $5 tacked onto their lines on upcoming statements. If you received a notification via text or email, T-Mobile's Plan Pricing Update 5LT page states that the change goes into effect April 2 and includes a few FAQs at the bottom.