diff --git a/kubernetes-deploy.gemspec b/kubernetes-deploy.gemspec
index 968f72d6b..4e63cca33 100644
--- a/kubernetes-deploy.gemspec
+++ b/kubernetes-deploy.gemspec
@@ -23,6 +23,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
 
   spec.required_ruby_version = '>= 2.3.0'
+  spec.add_dependency "activerecord", ">= 5.0"
   spec.add_dependency "activesupport", ">= 4.2"
   spec.add_dependency "kubeclient", "~> 2.5.1"
   spec.add_dependency "rest-client", ">= 1.7" # Minimum required by kubeclient. Remove when kubeclient releases v3.0.
diff --git a/lib/kubernetes-deploy/discoverable_resource.rb b/lib/kubernetes-deploy/discoverable_resource.rb
index 80ce0f4bb..f9e033e75 100644
--- a/lib/kubernetes-deploy/discoverable_resource.rb
+++ b/lib/kubernetes-deploy/discoverable_resource.rb
@@ -1,8 +1,8 @@
 # frozen_string_literal: true
 require 'kubernetes-deploy/kubernetes_resource'
 require 'kubernetes-deploy/kubeclient_builder'
-require "pry"
-require 'jsonpath'
+require "active_record"
+require "jsonpath"
 
 module KubernetesDeploy
   class DiscoverableResource < KubernetesResource
@@ -138,7 +138,7 @@ def self.add_resource(resource_class)
     end
 
     def self.parse_bool(value)
-      value.to_s == "true" # value could be nil
+      ActiveRecord::Type::Boolean.new.cast(value)
     end
 
     def self.parse_timeout(type, timeout)