1 files changed, 9 insertions, 2 deletions
diff --git a/lib/rubygems/dependency_resolver/index_specification.rb b/lib/rubygems/dependency_resolver/index_specification.rb
index 371018ba44..d8ac69d402 100644
--- a/lib/rubygems/dependency_resolver/index_specification.rb
+++ b/lib/rubygems/dependency_resolver/index_specification.rb
@@ -8,6 +8,8 @@ class Gem::DependencyResolver::IndexSpecification
 
   attr_reader :name
 
+  attr_reader :platform
+
   attr_reader :source
 
   attr_reader :version
@@ -39,14 +41,19 @@ class Gem::DependencyResolver::IndexSpecification
       q.breakable
       q.text full_name
 
+      unless Gem::Platform::RUBY == @platform then
+        q.breakable
+        q.text @platform
+      end
+
       q.breakable
-      q.text ' source '
+      q.text 'source '
       q.pp @source
     end
   end
 
   def spec
-    @spec ||= @set.load_spec(@name, @version, @source)
+    @spec ||= @set.load_spec(@name, @version, @platform, @source)
   end
 
 end