cowlib cypto out of date

[sparrell]

rebar3 compile (pulling in dependencies first time) says:
"===> Fetching cowlib ({pkg,<<"cowlib">>,<<"1.0.2">>})
===> Compiling cowlib
_build/default/lib/cowlib/src/cow_multipart.erl:392: Warning: crypto:rand_bytes/1 is deprecated and will be removed in a future release; use crypto:strong_rand_bytes/1"

Cowlib has fixed the problem but cowboy still calls for older version of cowlib.

Wait for cowboy to fix? Compile new version cowlib directly?