2 files changed, 2 insertions, 1 deletions
diff --git a/lib/rubygems/resolver/api_set.rb b/lib/rubygems/resolver/api_set.rb
index 19c59a315b..cafcd5b472 100644
--- a/lib/rubygems/resolver/api_set.rb
+++ b/lib/rubygems/resolver/api_set.rb
@@ -52,7 +52,7 @@ class Gem::Resolver::APISet < Gem::Resolver::Set
     end
 
     versions(req.name).each do |ver|
-      if req.dependency.match? req.name, ver[:number]
+      if req.dependency.match? req.name, ver[:number], @prerelease
         res << Gem::Resolver::APISpecification.new(self, ver)
       end
     end
diff --git a/lib/rubygems/source.rb b/lib/rubygems/source.rb
index 891cc3e644..a2848112e7 100644
--- a/lib/rubygems/source.rb
+++ b/lib/rubygems/source.rb
@@ -148,6 +148,7 @@ class Gem::Source
     spec = Gem::Util.inflate spec
 
     if update_cache?
+      require "fileutils"
       FileUtils.mkdir_p cache_dir
 
       File.open local_spec, 'wb' do |io|