How to update ddrescue Macport version?

I'm running ddrescue version 1.20, but the latest version is 1.21. I used MacPorts to install ddrescue, and according to their ports page only 1.20 is available to download and install through the MacPorts Project. What I would like to know is, could I somehow update the ddrescue version to 1.21 via rebuilding/updating the port, or would I have to compile it myself, independently of MacPorts?

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