diff --git a/Gemfile.lock b/Gemfile.lock
index 9b9a87a02c02..6d41bc29d935 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,8 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     chunky_png (1.3.8)
     coderay (1.1.1)
     colorator (1.1.0)
@@ -10,7 +10,7 @@ GEM
       chunky_png (~> 1.2)
       fssm (>= 0.2.7)
       sass (~> 3.2.19)
-    ffi (1.9.18)
+    ffi (1.15.5)
     forwardable-extended (2.6.0)
     fssm (0.2.10)
     jekyll (3.5.2)
@@ -33,13 +33,14 @@ GEM
       jekyll (~> 3.3)
     jekyll-time-to-read (0.1.2)
       jekyll
-    jekyll-watch (1.5.0)
-      listen (~> 3.0, < 3.1)
-    kramdown (1.14.0)
-    liquid (4.0.0)
-    listen (3.0.8)
+    jekyll-watch (1.5.1)
+      listen (~> 3.0)
+    kramdown (1.17.0)
+    liquid (4.0.3)
+    listen (3.1.5)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
+      ruby_dep (~> 1.2)
     mercenary (0.3.6)
     method_source (0.8.2)
     octopress (3.0.11)
@@ -61,23 +62,24 @@ GEM
       octopress-tag-helpers (~> 1.0)
     octopress-tag-helpers (1.0.8)
       jekyll (>= 2.0)
-    pathutil (0.14.0)
+    pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     pry (0.10.4)
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
-    public_suffix (3.0.0)
+    public_suffix (4.0.7)
     rack (1.6.9)
     rack-protection (1.5.5)
       rack
     rake (10.5.0)
-    rb-fsevent (0.10.2)
+    rb-fsevent (0.11.1)
     rb-inotify (0.9.8)
       ffi (>= 0.5.0)
     redcarpet (3.4.0)
     rouge (1.11.1)
-    safe_yaml (1.0.4)
+    ruby_dep (1.5.0)
+    safe_yaml (1.0.5)
     sass (3.2.19)
     sass-globbing (1.1.5)
       sass (>= 3.1)