diff --git a/docs/public-api/tools/flowable-slate/slate/Gemfile b/docs/public-api/tools/flowable-slate/slate/Gemfile
index dae5e50f78c..fec2cf67497 100644
--- a/docs/public-api/tools/flowable-slate/slate/Gemfile
+++ b/docs/public-api/tools/flowable-slate/slate/Gemfile
@@ -2,10 +2,10 @@ ruby '>=2.3.1'
 source 'https://rubygems.org'
 
 # Middleman
-gem 'middleman', '~>4.2.1'
-gem 'middleman-syntax', '~> 3.0.0'
-gem 'middleman-autoprefixer', '~> 2.7.0'
-gem "middleman-sprockets", "~> 4.1.0"
+gem 'middleman', '~> 4.3.0'
+gem 'middleman-syntax', '~> 3.2.0'
+gem 'middleman-autoprefixer', '~> 2.8.0'
+gem "middleman-sprockets", "~> 4.1.1"
 gem 'rouge', '~> 2.0.5'
 gem 'redcarpet', '~> 3.4.0'
 gem 'nokogiri', '~> 1.6.8'