diff --git a/active_model_serializers.gemspec b/active_model_serializers.gemspec
index c1298bc6..2128b44a 100644
--- a/active_model_serializers.gemspec
+++ b/active_model_serializers.gemspec
@@ -20,6 +20,5 @@ Gem::Specification.new do |gem|
   gem.add_dependency 'activemodel', '>= 3.0'
   gem.add_development_dependency "rails", ">= 3.0"
   gem.add_development_dependency "pry"
-  gem.add_development_dependency "pry-nav"
   gem.add_development_dependency "simplecov"
 end