Securing polycarbonate greenhouse

Hi,
We purchased a aluminium framed greenhouse with polycarbonate which we put up a few weeks ago and has been ok so far, but yesterday in the strong winds a few of the panels flew out. Does anyone have any ideas on how to secure the panels to the aluminium frame? They are currently held in by several clips along the frame but the panels do still move around a lot. Could do with some kind of waterproof glue or sealant to apply all around the panels but not sure what to use. I've included a photo below to hopefully help as it's hard to describe, but the metal clip does not actually hold the panels is place, I think it's just supposed to stop it from detaching completely

Thanks
Aimee

 

I would put a bead of good quality silicon round the frame and put the panels back in on that I did it to a mates and it has held them in all winter

 

Thanks Richard. Gonna pop to B&Q later and hopefully give it a go tonight