diff --git a/.rubocop.yml b/.rubocop.yml
index 947299a..c1751ce 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -85,8 +85,6 @@ Style/ClassVars:
   Enabled: false
 Style/GlobalVars:
   Enabled: false
-Style/ClassAndModuleChildren:
-  Enabled: false
 Style/MissingRespondToMissing:
   Enabled: false
 
diff --git a/Gemfile b/Gemfile
index 41e7f12..6984464 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,8 +2,8 @@
 
 source 'https://rubygems.org'
 
-gem 'middleman-core', '~> 4.5'
-gem 'middleman-cli', '~> 4.5'
+gem 'middleman-core', git: 'https://github.com/middleman/middleman.git'
+gem 'middleman-cli', git: 'https://github.com/middleman/middleman.git'
 
 # Specify your gem's dependencies in middleman-blog.gemspec
 gemspec