A plumbing question - what part do I need for this join?

[blimeymcblimey]

See pic. The person who plumbed in my dishwasher simply pushed the end of the grey hose onto the orange pipe, but it keeps working loose and creating a puddle below. I need something to make the join more secure. Can anyone tell me what part name to search for? (And if you can point me to a picture, even better!).

You need a Jubilee clip

p.s. It's not as close to the socket as it looks in the puc, so don't worry!

You need @pigletjohn

Thanks Oldraver. I've managed to find one of those, so will give it a go.