How to install exact version in mix.deps

I have problems when I upgrade plug_cowboy
I want to install version 2.3
I did

{:plug_cowboy, "== 2.3"}

but I got an error

How do I do that

{:plug_cowboy, "2.3.0"}
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Great.
I tried “2.3” :slight_smile:

When you want a specific version is needs to be specified completely, as you just found out :slight_smile:

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