diff --git a/scimaenaga.gemspec b/scimaenaga.gemspec
index b4d5dd8e..ade56b78 100644
--- a/scimaenaga.gemspec
+++ b/scimaenaga.gemspec
@@ -24,7 +24,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'factory_bot_rails'
   s.add_development_dependency 'pry'
   s.add_development_dependency 'rake', '~> 13.0'
-  s.add_development_dependency 'rspec-rails', '~> 5.0'
+  s.add_development_dependency 'rspec-rails'
   s.add_development_dependency 'sqlite3', '~> 1.3', '< 1.5'
   s.metadata = {
     'rubygems_mfa_required' => 'true',