diff --git lib/bundler.gemspec lib/bundler.gemspec
deleted file mode 100644
index 2b2bb412d5..0000000000
--- lib/bundler.gemspec
+++ /dev/null
@@ -1,64 +0,0 @@
-# coding: utf-8
-# frozen_string_literal: true
-
-begin
-  require File.expand_path("../lib/bundler/version", __FILE__)
-rescue LoadError
-  # for Ruby core repository
-  require File.expand_path("../bundler/version", __FILE__)
-end
-
-require "shellwords"
-
-Gem::Specification.new do |s|
-  s.name        = "bundler"
-  s.version     = Bundler::VERSION
-  s.license     = "MIT"
-  s.authors     = [
-    "André Arko", "Samuel Giddins", "Colby Swandale", "Hiroshi Shibata",
-    "David Rodríguez", "Grey Baker", "Stephanie Morillo", "Chris Morris", "James Wen", "Tim Moore",
-    "André Medeiros", "Jessica Lynn Suttles", "Terence Lee", "Carl Lerche",
-    "Yehuda Katz"
-  ]
-  s.email       = ["team@bundler.io"]
-  s.homepage    = "http://bundler.io"
-  s.summary     = "The best way to manage your application's dependencies"
-  s.description = "Bundler manages an application's dependencies through its entire life, across many machines, systematically and repeatably"
-
-  if s.respond_to?(:metadata=)
-    s.metadata = {
-      "bug_tracker_uri" => "http://github.com/bundler/bundler/issues",
-      "changelog_uri" => "https://github.com/bundler/bundler/blob/master/CHANGELOG.md",
-      "homepage_uri" => "https://bundler.io/",
-      "source_code_uri" => "http://github.com/bundler/bundler/",
-    }
-  end
-
-  if s.version >= Gem::Version.new("2.a".dup)
-    s.required_ruby_version     = ">= 2.3.0"
-    s.required_rubygems_version = ">= 2.5.0"
-  else
-    s.required_ruby_version     = ">= 1.8.7"
-    s.required_rubygems_version = ">= 1.3.6"
-  end
-
-  s.add_development_dependency "automatiek", "~> 0.1.0"
-  s.add_development_dependency "mustache",   "0.99.6"
-  s.add_development_dependency "rake",       "~> 10.0"
-  s.add_development_dependency "rdiscount",  "~> 2.2"
-  s.add_development_dependency "ronn",       "~> 0.7.3"
-  s.add_development_dependency "rspec",      "~> 3.6"
-
-  # s.files = `git ls-files -z`.split("\x0").select {|f| f.match(%r{^(lib|exe)/}) }
-  # we don't check in man pages, but we need to ship them because
-  # we use them to generate the long-form help for each command.
-  # s.files += Dir.glob("man/**/*")
-  # Include the CHANGELOG.md, LICENSE.md, README.md manually
-  # s.files += %w[CHANGELOG.md LICENSE.md README.md]
-  # include the gemspec itself because warbler breaks w/o it
-  s.files += %w[bundler.gemspec]
-
-  s.bindir        = "exe"
-  s.executables   = %w[bundle bundler]
-  s.require_paths = ["lib"]
-end
diff --git lib/bundler/bundler.gemspec lib/bundler/bundler.gemspec
new file mode 100644
index 0000000000..84d04292f2
--- /dev/null
+++ lib/bundler/bundler.gemspec
@@ -0,0 +1,64 @@
+# coding: utf-8
+# frozen_string_literal: true
+
+begin
+  require File.expand_path("../lib/bundler/version", __FILE__)
+rescue LoadError
+  # for Ruby core repository
+  require File.expand_path("../version", __FILE__)
+end
+
+require "shellwords"
+
+Gem::Specification.new do |s|
+  s.name        = "bundler"
+  s.version     = Bundler::VERSION
+  s.license     = "MIT"
+  s.authors     = [
+    "André Arko", "Samuel Giddins", "Colby Swandale", "Hiroshi Shibata",
+    "David Rodríguez", "Grey Baker", "Stephanie Morillo", "Chris Morris", "James Wen", "Tim Moore",
+    "André Medeiros", "Jessica Lynn Suttles", "Terence Lee", "Carl Lerche",
+    "Yehuda Katz"
+  ]
+  s.email       = ["team@bundler.io"]
+  s.homepage    = "http://bundler.io"
+  s.summary     = "The best way to manage your application's dependencies"
+  s.description = "Bundler manages an application's dependencies through its entire life, across many machines, systematically and repeatably"
+
+  if s.respond_to?(:metadata=)
+    s.metadata = {
+      "bug_tracker_uri" => "http://github.com/bundler/bundler/issues",
+      "changelog_uri" => "https://github.com/bundler/bundler/blob/master/CHANGELOG.md",
+      "homepage_uri" => "https://bundler.io/",
+      "source_code_uri" => "http://github.com/bundler/bundler/",
+    }
+  end
+
+  if s.version >= Gem::Version.new("2.a".dup)
+    s.required_ruby_version     = ">= 2.3.0"
+    s.required_rubygems_version = ">= 2.5.0"
+  else
+    s.required_ruby_version     = ">= 1.8.7"
+    s.required_rubygems_version = ">= 1.3.6"
+  end
+
+  s.add_development_dependency "automatiek", "~> 0.1.0"
+  s.add_development_dependency "mustache",   "0.99.6"
+  s.add_development_dependency "rake",       "~> 10.0"
+  s.add_development_dependency "rdiscount",  "~> 2.2"
+  s.add_development_dependency "ronn",       "~> 0.7.3"
+  s.add_development_dependency "rspec",      "~> 3.6"
+
+  # s.files = `git ls-files -z`.split("\x0").select {|f| f.match(%r{^(lib|exe)/}) }
+  # we don't check in man pages, but we need to ship them because
+  # we use them to generate the long-form help for each command.
+  # s.files += Dir.glob("man/**/*")
+  # Include the CHANGELOG.md, LICENSE.md, README.md manually
+  # s.files += %w[CHANGELOG.md LICENSE.md README.md]
+  # include the gemspec itself because warbler breaks w/o it
+  s.files += %w[bundler.gemspec]
+
+  s.bindir        = "exe"
+  s.executables   = %w[bundle bundler]
+  s.require_paths = ["lib"]
+end