diff --git a/workflower.gemspec b/workflower.gemspec
index e7e5683..6fe885a 100644
--- a/workflower.gemspec
+++ b/workflower.gemspec
@@ -31,8 +31,9 @@ Gem::Specification.new do |spec|
 
   # Uncomment to register a new dependency of your gem
   spec.add_dependency "activesupport", ">= 5.0.0.1"
+  spec.add_development_dependency "active_support"
   spec.add_development_dependency "byebug"
-  
+
   # For more information and examples about making a new gem, checkout our
   # guide at: https://bundler.io/guides/creating_gem.html
 end