diff --git a/Gemfile b/Gemfile
index 4260ed81228..6a80cac1d49 100644
--- a/Gemfile
+++ b/Gemfile
@@ -18,16 +18,16 @@ gem 'rubocop', group: :test
 
 # All of this is for Slate / middleman
 
-gem "middleman"
+gem "middleman", ">= 4.1.11"
 
 # For syntax highlighting
-gem "middleman-syntax"
+gem "middleman-syntax", ">= 3.0.0"
 
 # Plugin for middleman to generate GitHub pages
 gem 'middleman-gh-pages'
 
 # Live-reloading plugin
-gem "middleman-livereload", "~> 3.3.0"
+gem "middleman-livereload", "~> 3.4.1"
 
 gem 'redcarpet'