Unable to activate tdx-0.2.9, because slop-4.6.1 conflicts with slop (~> 4.4.1)

I'm trying to use tdx but it fails right after start:

$ tdx 
/usr/share/rubygems/rubygems/specification.rb:2285:in `raise_if_conflicts': Unable to activate tdx-0.2.9, because slop-4.6.1 conflicts with slop (~> 4.4.1) (Gem::ConflictError)
	from /usr/share/rubygems/rubygems/specification.rb:1408:in `activate'
	from /usr/share/rubygems/rubygems.rb:196:in `rescue in try_activate'
	from /usr/share/rubygems/rubygems.rb:193:in `try_activate'
	from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:125:in `rescue in require'
	from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:40:in `require'
	from /home/coder/.gem/ruby/gems/tdx-0.2.9/bin/tdx:27:in `<top (required)>'
	from /home/coder/bin/tdx:22:in `load'
	from /home/coder/bin/tdx:22:in `<main>'
$ gem list | grep slop
slop (4.6.1, 4.4.3, 3.6.0)

Despite the fact that I don't know how to resolve such a conflict, I think that this report can be interesting to developers so they can update tdx dependencies to use a newer slop version.