Depends on what you are using it for.
Still a fairly competent general purpose CPU, still a decent gaming CPU.
Your upgrade options are Ryzen 2000 chips which have roughly the same level of performance, but more cores. Ryzen 2600 would be a comparable replacement. Ryzen 2700 would double the core count. Or Ryzen 3000 series which goes quite a bit farther than any Haswell based chips. Up to 12 cores now, with a 16 core chip to be released. On the Intel side, you have really only the high end chips to look at. i7-8700k, i7-9700k, and the i9-9900k as useful replacements. Maybe the i5-9600k if you were after much higher FPS in lighter game titles only (CS:GO). The rest of Intel's lineup doesn't look good next to AMD's cheaper boards and overclocking support.
You gain a bit in I/O capabilities such as NVMe storage, maybe Type-C USB if that is useful to you.