Fit question: How do you fix tight fitting ankles?

This sock fits perfectly over the length of my foot, but it's right tight around the ankle area (pointed) and I always feel like I'm going to rip when I put it on/off.

How do I fix this? Should I just go up a size?

Thanks in advance.

(This is a 'Totally Tesalated' sock knit toe up with 'Fish lips kiss heel's in WYS Cayenne Pepper, Zandra's rainbow and La Bien Aimée Soyeux Bois de Rose)