diff --git a/lever.gemspec b/lever.gemspec
index c92ad38..df216e8 100644
--- a/lever.gemspec
+++ b/lever.gemspec
@@ -37,7 +37,7 @@ Gem::Specification.new do |spec|
   spec.add_runtime_dependency('httparty')
   spec.add_runtime_dependency('retriable')
 
-  spec.add_development_dependency "bundler", "~> 1.16"
+  spec.add_development_dependency "bundler", "~> 2.4"
   spec.add_development_dependency "rake", "~> 13.0"
   spec.add_development_dependency "rspec", "~> 3.0"
   spec.add_development_dependency "webmock"