diff --git a/lib/bundler/source/rubygems.rb b/lib/bundler/source/rubygems.rb
index 43b193cf1c..858a69a48b 100644
--- a/lib/bundler/source/rubygems.rb
+++ b/lib/bundler/source/rubygems.rb
@@ -71,6 +71,10 @@ module Bundler
         @remotes.size > 1
       end
 
+      def no_remotes?
+        @remotes.size == 0
+      end
+
       def can_lock?(spec)
         return super unless multiple_remotes?
         include?(spec.source)
diff --git a/spec/bundler/bundler/source/rubygems_spec.rb b/spec/bundler/bundler/source/rubygems_spec.rb
index 7c457a7265..884fa81046 100644
--- a/spec/bundler/bundler/source/rubygems_spec.rb
+++ b/spec/bundler/bundler/source/rubygems_spec.rb
@@ -30,4 +30,18 @@ RSpec.describe Bundler::Source::Rubygems do
       end
     end
   end
+
+  describe "#no_remotes?" do
+    context "when no remote provided" do
+      it "returns a truthy value" do
+        expect(described_class.new("remotes" => []).no_remotes?).to be_truthy
+      end
+    end
+
+    context "when a remote provided" do
+      it "returns a falsey value" do
+        expect(described_class.new("remotes" => ["https://rubygems.org"]).no_remotes?).to be_falsey
+      end
+    end
+  end
 end