Tempting fate talk - Tradução em português

My boss (he's a English guy) and I were talking about constant power suply failure in Sao Paulo. At the next morning he text me asking if my remote connection (vpn) had worked.

I told him there were no eletricity suply at that moment, so I wasn't connected. He replied: "Ouch! We were tempting fate talk about that yesterday"

What the bold part means? What did he mean?

Thanks in advance!