diff --git a/docs/Gemfile b/docs/Gemfile
index 4f4991e3b2a6e..38a92971da814 100644
--- a/docs/Gemfile
+++ b/docs/Gemfile
@@ -1,19 +1,19 @@
 source 'https://rubygems.org'
 
-gem 'rake'
+gem 'rake', '>= 12.3.3'
 
 # jekyll, which builds it all
 # 2.0 includes sass processing
-gem 'jekyll', '~>2.0'
+gem 'jekyll', '~> 3.9', '>= 3.9.0'
 
 # Auto redirect pages
-gem 'jekyll-redirect-from'
+gem 'jekyll-redirect-from', '>= 0.7.0'
 
 # JSON
-gem 'json'
+gem 'json', '>= 2.3.0'
 
 # For `rake watch`
 gem 'rb-fsevent'
 
 # For markdown header cleanup
-gem 'sanitize', '~>2.0'
+gem 'sanitize', '~> 4.6', '>= 4.6.3'
diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index e423b54711bd2..facdd4621829f 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -1,82 +1,84 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    blankslate (2.1.2.4)
-    celluloid (0.15.2)
-      timers (~> 1.1.0)
-    classifier (1.3.4)
-      fast-stemmer (>= 1.0.0)
-    coffee-script (2.3.0)
-      coffee-script-source
-      execjs
-    coffee-script-source (1.7.1)
-    colorator (0.1)
-    execjs (2.2.1)
-    fast-stemmer (1.0.2)
-    ffi (1.9.3)
-    jekyll (2.2.0)
-      classifier (~> 1.3)
-      colorator (~> 0.1)
-      jekyll-coffeescript (~> 1.0)
-      jekyll-gist (~> 1.0)
-      jekyll-paginate (~> 1.0)
+    addressable (2.8.2)
+      public_suffix (>= 2.0.2, < 6.0)
+    colorator (1.1.0)
+    concurrent-ruby (1.2.2)
+    crass (1.0.6)
+    em-websocket (0.5.3)
+      eventmachine (>= 0.12.9)
+      http_parser.rb (~> 0)
+    eventmachine (1.2.7)
+    ffi (1.15.5)
+    forwardable-extended (2.6.0)
+    http_parser.rb (0.8.0)
+    i18n (1.12.0)
+      concurrent-ruby (~> 1.0)
+    jekyll (3.9.3)
+      addressable (~> 2.4)
+      colorator (~> 1.0)
+      em-websocket (~> 0.5)
+      i18n (>= 0.7, < 2)
       jekyll-sass-converter (~> 1.0)
-      jekyll-watch (~> 1.0)
-      kramdown (~> 1.3)
-      liquid (~> 2.6.1)
+      jekyll-watch (~> 2.0)
+      kramdown (>= 1.17, < 3)
+      liquid (~> 4.0)
       mercenary (~> 0.3.3)
-      pygments.rb (~> 0.6.0)
-      redcarpet (~> 3.1)
+      pathutil (~> 0.9)
+      rouge (>= 1.7, < 4)
       safe_yaml (~> 1.0)
-      toml (~> 0.1.0)
-    jekyll-coffeescript (1.0.0)
-      coffee-script (~> 2.2)
-    jekyll-gist (1.1.0)
-    jekyll-paginate (1.0.0)
-    jekyll-redirect-from (0.5.0)
-      jekyll (~> 2.0)
-    jekyll-sass-converter (1.2.0)
-      sass (~> 3.2)
-    jekyll-watch (1.1.0)
-      listen (~> 2.7)
-    json (1.8.1)
-    kramdown (1.4.1)
-    liquid (2.6.1)
-    listen (2.7.9)
-      celluloid (>= 0.15.2)
-      rb-fsevent (>= 0.9.3)
-      rb-inotify (>= 0.9)
-    mercenary (0.3.4)
-    mini_portile (0.6.0)
-    nokogiri (1.6.3.1)
-      mini_portile (= 0.6.0)
-    parslet (1.5.0)
-      blankslate (~> 2.0)
-    posix-spawn (0.3.9)
-    pygments.rb (0.6.0)
-      posix-spawn (~> 0.3.6)
-      yajl-ruby (~> 1.1.0)
-    rake (10.3.2)
-    rb-fsevent (0.9.4)
-    rb-inotify (0.9.5)
-      ffi (>= 0.5.0)
-    redcarpet (3.1.2)
-    safe_yaml (1.0.4)
-    sanitize (2.0.6)
+    jekyll-redirect-from (0.16.0)
+      jekyll (>= 3.3, < 5.0)
+    jekyll-sass-converter (1.5.2)
+      sass (~> 3.4)
+    jekyll-watch (2.2.1)
+      listen (~> 3.0)
+    json (2.6.3)
+    kramdown (2.4.0)
+      rexml
+    liquid (4.0.4)
+    listen (3.8.0)
+      rb-fsevent (~> 0.10, >= 0.10.3)
+      rb-inotify (~> 0.9, >= 0.9.10)
+    mercenary (0.3.6)
+    mini_portile2 (2.8.1)
+    nokogiri (1.14.2)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
+    nokogumbo (1.5.0)
+      nokogiri
+    pathutil (0.16.2)
+      forwardable-extended (~> 2.6)
+    public_suffix (5.0.1)
+    racc (1.6.2)
+    rake (13.0.6)
+    rb-fsevent (0.11.2)
+    rb-inotify (0.10.1)
+      ffi (~> 1.0)
+    rexml (3.2.5)
+    rouge (3.30.0)
+    safe_yaml (1.0.5)
+    sanitize (4.6.6)
+      crass (~> 1.0.2)
       nokogiri (>= 1.4.4)
-    sass (3.3.14)
-    timers (1.1.0)
-    toml (0.1.1)
-      parslet (~> 1.5.0)
-    yajl-ruby (1.1.0)
+      nokogumbo (~> 1.4)
+    sass (3.7.4)
+      sass-listen (~> 4.0.0)
+    sass-listen (4.0.0)
+      rb-fsevent (~> 0.9, >= 0.9.4)
+      rb-inotify (~> 0.9, >= 0.9.7)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  jekyll (~> 2.0)
-  jekyll-redirect-from
-  json
-  rake
+  jekyll (~> 3.9, >= 3.9.0)
+  jekyll-redirect-from (>= 0.7.0)
+  json (>= 2.3.0)
+  rake (>= 12.3.3)
   rb-fsevent
-  sanitize (~> 2.0)
+  sanitize (~> 4.6, >= 4.6.3)
+
+BUNDLED WITH
+   2.1.4