Error with plone.app.iterate (check in / check out)

Hi

Perhaps someone can help me understand how fixes get rolled into Plone or how to update the version of a component in the Plone package.

I installed a clean install of Plone 5.0.8 to re-test the iterate feature. I got the same errror.

I looked at : https://github.com/plone/plone.app.iterate/issues/54

this shows the issue as fixed in iterate 3.3.7 . so i added "plone.app.iterate = 3.3.7" to buildout but got an error stating it couldn't find a distribution for it.

How do I get the latest version of iterate into my plone installation.

Note: i also updated the version in "versions'. got same error

thanks.