diff --git a/companies-house-rest.gemspec b/companies-house-rest.gemspec
index 535d9a4..c04a4ad 100644
--- a/companies-house-rest.gemspec
+++ b/companies-house-rest.gemspec
@@ -22,9 +22,9 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
   spec.required_ruby_version = ">= 2.5.5"
 
-  spec.add_runtime_dependency "activesupport", ">= 4.2", "< 6"
   spec.add_runtime_dependency "virtus", "~> 1.0", ">= 1.0.5"
 
+  spec.add_development_dependency "activesupport", ">= 4.2", "< 6"
   spec.add_development_dependency "gc_ruboconfig", "~> 2.4"
   spec.add_development_dependency "rake", "~> 12.0"
   spec.add_development_dependency "rspec", "~> 3.5"
diff --git a/lib/companies_house/version.rb b/lib/companies_house/version.rb
index 73db7bb..d824320 100644
--- a/lib/companies_house/version.rb
+++ b/lib/companies_house/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module CompaniesHouse
-  VERSION = "0.4.5"
+  VERSION = "0.4.6"
 end