Account security

I've just received an e-mail (in French, while my account is set to English), supposedly from Riot, saying that someone asked to change my password, and if it wasn't me, to just ignore it. This is freaking me out, since I definitely made no such request. Should I change my password/e-mail password/anything else? I really don't want my account to get hacked. Edit: mostly, I need to know whether it's indeed safe to ignore. I looked at where the e-mail was sent from, and it does look pretty genuine.
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