It's not a simple version bump, giving this error on load:

Failed to load mods: Error while loading item prototype "pollution-tool" (selection-tool): SelectionModeData has one of the following flags {'blueprint', 'deconstruct', 'cancel-deconstruct', 'upgrade', 'cancel-upgrade', 'downgrade'} but is missing any flags that would select entities. In 2.1 those flags no longer imply 'any-entity' meaning no entities will be selected. If you believe this is correct, you can set SelectionModeData::ignore_cannot_select_entities = true to suppress this warning. in property tree at ROOT.selection-tool.pollution-tool.select