Engine Coolant leaking

[Branderrp]

It's a very slow leak but would like to attend to it so I don't get any issues in the future. What should I be replacing?

The first picture shows the coolant leaking a bit in the hose on the side. Second just shows behind the cap. Third shows the side of the cap

[06YarisRS]

I wouldn't worry about that hose. Pull it off, clean it and reinstall. Maybe heat it lightly first with a heat gun to soften it so it conforms well. Replace the radiator cap. Done.