lib/yard/cli/diff.rb in yard-0.8.4.1 vs lib/yard/cli/diff.rb in yard-0.8.5

@@ -184,10 +184,10 @@
 
       def expand_gem(gemfile, io)
         tmpdir = File.join(Dir.tmpdir, gemfile)
         log.info "Expanding #{gemfile} to #{tmpdir}..."
         FileUtils.mkdir_p(tmpdir)
-        Gem::Package.open(io) do |pkg|
+        Gem::Package.send(:open, io) do |pkg|
           pkg.each do |entry|
             pkg.extract_entry(tmpdir, entry)
           end
         end
         tmpdir
\ No newline at end of file