Not long at all :-)

Release 0.5.6 - 2018-07-03
Updated to sync with NHML v1.9.0.4
New miner: EWBF 0.3 Zhash miner (for BTG mining)
Please note that as of writing this release note, auto-exchange is unavailable for BTG, so profitability data is always 0 for this coin.
If you choose to mine this coin exclusively (without profit-switching), you will need to disable all algorithms except EquihashBTG, and then click on the "Start" button to begin mining.

Download NicerMiner v0.5.6:
https://github.com/odedolive/NicerMiner/raw/master/releases/NicerMiner%200.5.6.zip