A bug report was added 9 months ago requesting support of the newer $2y$ prefix: https://rt.cpan.org/Public/Bug/Display.html?id=93688.

In reply to Re: Crypt::Eksblowfish::Bcrypt doesnt support 2y? by Mr. Muskrat
in thread Crypt::Eksblowfish::Bcrypt doesnt support 2y? by dallase

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