my codebase depends on redis ^5.0.1 and I'm unable to use the latest version of arq with it
redis = {extras = ["hiredis"], version = "^5.0.1"}

Because no versions of arq match >0.26.0,<0.27.0
 and arq (0.26.0) depends on redis[hiredis] (>=4.2.0,<5), arq (>=0.26.0,<0.27.0) requires redis[hiredis] (>=4.2.0,<5).
So, because ... depends on both redis[hiredis] (^5.0.1) and arq (^0.26.0), version solving failed.

Any chance the version pinning can support updates to the 5.0.x track rather than locking to 5.0.0?

Another comment on github requesting this for a slightly different reason: #441 (comment)