# Sumatra PDF is a PDF, ePub, MOBI, CHM, XPS, DjVu, CBZ, CBR reader for Windows

A new version of Sumatra has been released, you `Help -> Check for updates` menu and it didn't notify about a new release. Is this a bug?
Most likely not.
We wait at least a week before activating update check. That way, if there is a major problem with a new release that we didn't catch in testing, less people will have to re-download the update that fixes the problem.

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