diff --git a/shoryuken.gemspec b/shoryuken.gemspec
index c5bd36ed..7d59a051 100644
--- a/shoryuken.gemspec
+++ b/shoryuken.gemspec
@@ -18,7 +18,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ['lib']
 
   spec.add_development_dependency 'dotenv'
-  spec.add_development_dependency 'pry-byebug'
+  spec.add_development_dependency 'pry-byebug', '3.9.0'
   spec.add_development_dependency 'rake'
   spec.add_development_dependency 'rspec'