That looks fine if its above 13.5 - I had my alternator done this year and battery replaced last year and I hover from 13.5 to 13.8 or so, mostly 13.8 - in the months leading up to my alternator failure I was hovering around 13.1 - 13.2v while driving -

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2018 Ram 2500 6.7L Cummins 68RFE
19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed
2013 X5 35D (CEO's) - Born on 5/17/2013 -
82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards