1 files changed, 12 insertions, 0 deletions
diff --git a/lib/bundler/definition.rb b/lib/bundler/definition.rb
index 34c23796e8..ccb3ab1cec 100644
--- a/lib/bundler/definition.rb
+++ b/lib/bundler/definition.rb
@@ -484,6 +484,7 @@ module Bundler
 
     def reresolve
       last_resolve = converge_locked_specs
+      remove_ruby_from_platforms_if_necessary!(dependencies)
       expanded_dependencies = expand_dependencies(dependencies + metadata_dependencies, true)
       Resolver.resolve(expanded_dependencies, source_requirements, last_resolve, gem_version_promoter, additional_base_requirements_for_resolve, platforms)
     end
@@ -865,6 +866,17 @@ module Bundler
       end
     end
 
+    def remove_ruby_from_platforms_if_necessary!(dependencies)
+      return if Bundler.frozen_bundle? ||
+        Bundler.local_platform == Gem::Platform::RUBY ||
+        !platforms.include?(Gem::Platform::RUBY) ||
+        (@new_platform && platforms.last == Gem::Platform::RUBY) ||
+        !@originally_locked_specs.incomplete_ruby_specs?(dependencies)
+
+      remove_platform(Gem::Platform::RUBY)
+      add_current_platform
+    end
+
     def source_map
       @source_map ||= SourceMap.new(sources, dependencies, @locked_specs)
     end