Yes, it's impossible.

Algo was updated to cryptonight-heavy

Supported miner agents:
1) SRBMiner, gives best hashrate, use "cryptonight_type" : "heavy", try "double_threads" : true, for better results.
2) xmr-stak-haven, use "currency": "haven", can give best hashrate when tuned.
3) xmrig 2.6.0+, use "algo": "cryptonight-heavy"

Sincerely yours,
https://haven.miner.rocks