diff --git a/Gemfile b/Gemfile
index a442681bd..c7664a95c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,6 +9,7 @@ source 'https://rubygems.org'
 gemspec
 
 gem 'bump', require: false
+gem 'bundler', '>= 1.15.0', '< 3.0'
 gem 'oedipus_lex', '>= 2.6.0', require: false
 gem 'racc'
 gem 'rake', '~> 13.0'
diff --git a/rubocop-ast.gemspec b/rubocop-ast.gemspec
index 18ab07828..44f6054ef 100644
--- a/rubocop-ast.gemspec
+++ b/rubocop-ast.gemspec
@@ -35,7 +35,5 @@ Gem::Specification.new do |s|
 
   s.add_runtime_dependency('parser', '>= 3.2.1.0')
 
-  s.add_development_dependency('bundler', '>= 1.15.0', '< 3.0')
-
   ##### Do NOT add `rubocop` (or anything depending on `rubocop`) here. See Gemfile
 end