diff --git a/lib/bundler/gem_helpers.rb b/lib/bundler/gem_helpers.rb
index f0d5ce135a..e85a93c64a 100644
--- a/lib/bundler/gem_helpers.rb
+++ b/lib/bundler/gem_helpers.rb
@@ -114,8 +114,6 @@ module Bundler
 
     def same_deps(spec, exemplary_spec)
       same_runtime_deps = spec.dependencies.sort == exemplary_spec.dependencies.sort
-      return same_runtime_deps unless spec.is_a?(Gem::Specification) && exemplary_spec.is_a?(Gem::Specification)
-
       same_metadata_deps = spec.required_ruby_version == exemplary_spec.required_ruby_version && spec.required_rubygems_version == exemplary_spec.required_rubygems_version
       same_runtime_deps && same_metadata_deps
     end
diff --git a/lib/bundler/lazy_specification.rb b/lib/bundler/lazy_specification.rb
index 067bd2f49f..62d028356e 100644
--- a/lib/bundler/lazy_specification.rb
+++ b/lib/bundler/lazy_specification.rb
@@ -8,12 +8,14 @@ module Bundler
     include ForcePlatform
 
     attr_reader :name, :version, :platform
-    attr_accessor :source, :remote, :force_ruby_platform, :dependencies
+    attr_accessor :source, :remote, :force_ruby_platform, :dependencies, :required_ruby_version, :required_rubygems_version
 
     def initialize(name, version, platform, source = nil)
       @name          = name
       @version       = version
       @dependencies  = []
+      @required_ruby_version = Gem::Requirement.default
+      @required_rubygems_version = Gem::Requirement.default
       @platform      = platform || Gem::Platform::RUBY
       @source        = source
       @force_ruby_platform = default_force_ruby_platform
diff --git a/lib/bundler/resolver/spec_group.rb b/lib/bundler/resolver/spec_group.rb
index 352105b651..f956ec0968 100644
--- a/lib/bundler/resolver/spec_group.rb
+++ b/lib/bundler/resolver/spec_group.rb
@@ -28,6 +28,8 @@ module Bundler
           lazy_spec = LazySpecification.new(name, version, s.platform, source)
           lazy_spec.force_ruby_platform = force_ruby_platform
           lazy_spec.dependencies = s.dependencies
+          lazy_spec.required_ruby_version = s.required_ruby_version
+          lazy_spec.required_rubygems_version = s.required_rubygems_version
           lazy_spec
         end
       end
@@ -64,8 +66,6 @@ module Bundler
       end
 
       def metadata_dependencies(spec)
-        return [] if spec.is_a?(LazySpecification)
-
         [
           metadata_dependency("Ruby", spec.required_ruby_version),
           metadata_dependency("RubyGems", spec.required_rubygems_version),