initialize': unknown keyword: default_value_dynamic (ArgumentError)

[SBejga]

I updated recently to 0.3.0 and since then it is crashing when starting to watchbuild:

/Library/Ruby/Gems/2.3.0/gems/fastlane-2.81.0/fastlane_core/lib/fastlane_core/configuration/config_item.rb:85:in `initialize': unknown keyword: default_value_dynamic (ArgumentError)
	from /Library/Ruby/Gems/2.3.0/gems/watchbuild-0.3.0/lib/watchbuild/options.rb:23:in `new'
	from /Library/Ruby/Gems/2.3.0/gems/watchbuild-0.3.0/lib/watchbuild/options.rb:23:in `available_options'
	from /Library/Ruby/Gems/2.3.0/gems/watchbuild-0.3.0/bin/watchbuild:26:in `run'
	from /Library/Ruby/Gems/2.3.0/gems/watchbuild-0.3.0/bin/watchbuild:58:in `<top (required)>'
	from /usr/local/bin/watchbuild:22:in `load'
	from /usr/local/bin/watchbuild:22:in `<main>'

any idea?