mojo_magick.gemspec in mojo_magick-0.6.3 vs mojo_magick.gemspec in mojo_magick-0.6.4

@@ -32,10 +32,9 @@
   s.require_paths = ["lib"]
   s.add_development_dependency("bundle-audit")
   s.add_development_dependency("bundler")
   s.add_development_dependency("minitest")
   s.add_development_dependency("rake")
-  s.add_development_dependency("rspec-expectations")
   s.add_development_dependency("rubocop")
   s.add_development_dependency("rubocop-performance")
 
   s.post_install_message = post_install_message
 end