diff --git a/lib/bundler/rubygems_integration.rb b/lib/bundler/rubygems_integration.rb
index 18da5915a5..d97621cd92 100644
--- a/lib/bundler/rubygems_integration.rb
+++ b/lib/bundler/rubygems_integration.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-require "rubygems"
+require "rubygems" unless defined?(Gem)
 
 module Bundler
   class RubygemsIntegration