diff --git a/Gemfile b/Gemfile
index 6461499..b757200 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,8 +11,4 @@ if ENV['PAGEFLOW_DEPENDENCIES'] == 'experimental'
     gem 'pageflow'
     gem 'pageflow-support'
   end
-
-  gem 'pageflow-external-links', git: 'https://github.com/codevise/pageflow-external-links'
-else
-  gem 'rails', '5.2.6'
 end
diff --git a/pageflow-linkmap-page.gemspec b/pageflow-linkmap-page.gemspec
index 6a27b61..33c0853 100644
--- a/pageflow-linkmap-page.gemspec
+++ b/pageflow-linkmap-page.gemspec
@@ -18,21 +18,16 @@ Gem::Specification.new do |spec|
 
   spec.required_ruby_version = '>= 2.1'
 
-  spec.add_runtime_dependency 'pageflow', ['>= 15.7', '< 17']
+  spec.add_runtime_dependency 'pageflow', ['>= 15.7', '< 18']
   spec.add_runtime_dependency 'pageflow-external-links', '~> 2.x'
 
   spec.add_development_dependency 'bundler', ['>= 1.0', '< 3']
-  spec.add_development_dependency 'pageflow-support', ['>= 15.0', '< 17']
-  spec.add_development_dependency 'rake', '~> 12.0'
   spec.add_development_dependency 'factory_bot_rails', '~> 4.8'
+  spec.add_development_dependency 'pageflow-support', ['>= 15.0', '< 18']
+  spec.add_development_dependency 'rake', '~> 12.0'
+  spec.add_development_dependency 'rspec-rails', '~> 6.0'
   spec.add_development_dependency 'sqlite3', '~> 1.3'
 
-  if ENV['PAGEFLOW_DEPENDENCIES'] == 'experimental'
-    spec.add_development_dependency 'rspec-rails', '~> 6.0'
-  else
-    spec.add_development_dependency 'rspec-rails', '~> 3.7'
-  end
-
   # Browser like integration testing
   spec.add_development_dependency 'capybara', '~> 2.13'