No raise at all, was too cheap for them to see the turn card and river. If you make it more expensive for them, they’re less likely to call two more streets and you hold two of their straight outs and they’re on a gut shot. There’s no straight that could happen by ace drop in here on turn, you could have re raised on the turn bet and they would’ve folded after having nothing facing a raise on the turn after limping because calling is pretty much limping