After sudo apt-get update && apt-get dist-upgrade wpscan is broken, obviously because of dependencies: 
┌──(cohst@kali-linux)-[~] 
└─$ wpscan -h 
Traceback (most recent call last): 
12: from /usr/bin/wpscan:25:in <main>' 11: from /usr/lib/ruby/vendor_ruby/rubygems.rb:298:inactivate_bin_path' 
10: from /usr/lib/ruby/vendor_ruby/rubygems.rb:298:in synchronize' 9: from /usr/lib/ruby/vendor_ruby/rubygems.rb:299:inblock in activate_bin_path' 
8: from /usr/lib/ruby/vendor_ruby/rubygems/specification.rb:1372:in activate' 7: from /usr/lib/ruby/vendor_ruby/rubygems/specification.rb:1390:inactivate_dependencies' 
6: from /usr/lib/ruby/vendor_ruby/rubygems/specification.rb:1390:in each' 5: from /usr/lib/ruby/vendor_ruby/rubygems/specification.rb:1408:inblock in activate_dependencies' 
4: from /usr/lib/ruby/vendor_ruby/rubygems/specification.rb:1372:in activate' 3: from /usr/lib/ruby/vendor_ruby/rubygems/specification.rb:1390:inactivate_dependencies' 
2: from /usr/lib/ruby/vendor_ruby/rubygems/specification.rb:1390:in each' 1: from /usr/lib/ruby/vendor_ruby/rubygems/specification.rb:1402:inblock in activate_dependencies' 
/usr/lib/ruby/vendor_ruby/rubygems/dependency.rb:313:in to_specs': Could not find 'ethon' (~> 0.9.0) - did find: [ethon-0.15.0] (Gem::MissingSpecVersionError) Checked in 'GEM_PATH=/home/cohst/.local/share/gem/ruby/2.7.0:/var/lib/gems/2.7.0:/usr/local/lib/ruby/gems/2.7.0:/usr/lib/ruby/gems/2.7.0:/usr/lib/x86_64-linux-gnu/ruby/gems/2.7.0:/usr/share/rubygems-integration/2.7.0:/usr/share/rubygems-integration/all:/usr/lib/x86_64-linux-gnu/rubygems-integration/2.7.0' , executegem envfor more information 12: from /usr/bin/wpscan:25:in<main>' 
11: from /usr/lib/ruby/vendor_ruby/rubygems.rb:298:in activate_bin_path' 10: from /usr/lib/ruby/vendor_ruby/rubygems.rb:298:insynchronize' 
9: from /usr/lib/ruby/vendor_ruby/rubygems.rb:299:in block in activate_bin_path' 8: from /usr/lib/ruby/vendor_ruby/rubygems/specification.rb:1372:inactivate' 
7: from /usr/lib/ruby/vendor_ruby/rubygems/specification.rb:1390:in activate_dependencies' 6: from /usr/lib/ruby/vendor_ruby/rubygems/specification.rb:1390:ineach' 
5: from /usr/lib/ruby/vendor_ruby/rubygems/specification.rb:1408:in block in activate_dependencies' 4: from /usr/lib/ruby/vendor_ruby/rubygems/specification.rb:1372:inactivate' 
3: from /usr/lib/ruby/vendor_ruby/rubygems/specification.rb:1390:in activate_dependencies' 2: from /usr/lib/ruby/vendor_ruby/rubygems/specification.rb:1390:ineach' 
1: from /usr/lib/ruby/vendor_ruby/rubygems/specification.rb:1401:in block in activate_dependencies' /usr/lib/ruby/vendor_ruby/rubygems/specification.rb:1404:inrescue in block in activate_dependencies': Could not find 'ethon' (~> 0.9.0) among 161 total gem(s) (Gem::MissingSpecError) 
Checked in 'GEM_PATH=/home/cohst/.local/share/gem/ruby/2.7.0:/var/lib/gems/2.7.0:/usr/local/lib/ruby/gems/2.7.0:/usr/lib/ruby/gems/2.7.0:/usr/lib/x86_64-linux-gnu/ruby/gems/2.7.0:/usr/share/rubygems-integration/2.7.0:/usr/share/rubygems-integration/all:/usr/lib/x86_64-linux-gnu/rubygems-integration/2.7.0' at: /usr/share/rubygems-integration/all/specifications/cms_scanner-0.13.6.gemspec, execute gem env for more information 
┌──(cohst@kali-linux)-[~] 
└─$                |