diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index 8818a00d494..7388b30a524 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -65,17 +65,19 @@ GEM
       rb-inotify (>= 0.9)
     mercenary (0.3.6)
     mini_magick (4.5.1)
-    mini_portile2 (2.1.0)
+    mini_portile2 (2.8.0)
     minitest (5.9.1)
     multi_json (1.12.1)
-    nokogiri (1.6.8.1)
-      mini_portile2 (~> 2.1.0)
+    nokogiri (1.13.9)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     parslet (1.5.0)
       blankslate (~> 2.0)
     posix-spawn (0.3.12)
     pygments.rb (0.5.4)
       posix-spawn (~> 0.3.6)
       yajl-ruby (~> 1.1.0)
+    racc (1.6.0)
     rack (1.6.5)
     rb-fsevent (0.9.8)
     rb-inotify (0.9.7)
@@ -101,7 +103,7 @@ GEM
       parslet (~> 1.5.0)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
-    uglifier (3.0.3)
+    uglifier (3.0.4)
       execjs (>= 0.3.0, < 3)
     yajl-ruby (1.1.0)
 
@@ -114,4 +116,4 @@ DEPENDENCIES
   jekyll (= 2.0.3)
   jekyll-assets
   jekyll-sitemap (= 0.4.1)
-  uglifier
+  uglifier (= 3.0.4)