Ruby on Rails - Gem "Therubyracer" installation after ruby 2.3.0 version update

I updated my Ruby from 1.9.3 to 2.3.0. Now i try to make bundle install, but the gem "Therubyracer" make an error.

Error :

C:\SVN\FOS\branches\FOS_5_0>gem install therubyracer
Fetching: libv8-3.16.14.15.gem (100%)
Temporarily enhancing PATH to include DevKit...
Building native extensions.  This could take a while...
ERROR:  Error installing therubyracer:
        ERROR: Failed to build gem native extension.

    current directory: C:/Ruby23/lib/ruby/gems/2.3.0/gems/libv8-3.16.14.15/ext/libv8
C:/Ruby23/bin/ruby.exe -r ./siteconf20160606-1212-1uwfv1y.rb extconf.rb
creating Makefile
Der Befehl "patch" ist entweder falsch geschrieben oder
konnte nicht gefunden werden.
C:/Ruby23/lib/ruby/gems/2.3.0/gems/libv8-3.16.14.15/ext/libv8/patcher.rb:15:in `block (2 levels) in patch!': failed to apply patch C:/Ruby23/lib/ruby/gems/2.3.0/gems/libv8-3.16.14.15/patches/disable-building-tests.patch (RuntimeError)
        from C:/Ruby23/lib/ruby/gems/2.3.0/gems/libv8-3.16.14.15/ext/libv8/patcher.rb:12:in `each'
        from C:/Ruby23/lib/ruby/gems/2.3.0/gems/libv8-3.16.14.15/ext/libv8/patcher.rb:12:in `block in patch!'
        from C:/Ruby23/lib/ruby/gems/2.3.0/gems/libv8-3.16.14.15/ext/libv8/patcher.rb:8:in `open'
        from C:/Ruby23/lib/ruby/gems/2.3.0/gems/libv8-3.16.14.15/ext/libv8/patcher.rb:8:in `patch!'
        from C:/Ruby23/lib/ruby/gems/2.3.0/gems/libv8-3.16.14.15/ext/libv8/builder.rb:57:in `block in build_libv8!'
        from C:/Ruby23/lib/ruby/gems/2.3.0/gems/libv8-3.16.14.15/ext/libv8/builder.rb:54:in `chdir'
        from C:/Ruby23/lib/ruby/gems/2.3.0/gems/libv8-3.16.14.15/ext/libv8/builder.rb:54:in `build_libv8!'
        from C:/Ruby23/lib/ruby/gems/2.3.0/gems/libv8-3.16.14.15/ext/libv8/location.rb:24:in `install!'
        from extconf.rb:7:in `<main>'
Applying C:/Ruby23/lib/ruby/gems/2.3.0/gems/libv8-3.16.14.15/patches/disable-building-tests.patch

extconf failed, exit code 1

Gem files will remain installed in C:/Ruby23/lib/ruby/gems/2.3.0/gems/libv8-3.16.14.15 for inspection.
Results logged to C:/Ruby23/lib/ruby/gems/2.3.0/extensions/x86-mingw32/2.3.0/libv8-3.16.14.15/gem_make.out

How can i fix this problem, because the server wants this gem for start?