diff --git a/Gemfile.lock b/Gemfile.lock
index 18ee784..fa88235 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,19 +6,19 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.7.0)
+      public_suffix (>= 2.0.2, < 5.0)
     coderay (1.1.2)
     colorator (1.1.0)
     colorize (0.8.1)
-    concurrent-ruby (1.0.5)
+    concurrent-ruby (1.1.6)
     em-websocket (0.5.1)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
     ethon (0.11.0)
       ffi (>= 1.3.0)
-    eventmachine (1.2.5)
-    ffi (1.9.18)
+    eventmachine (1.2.7)
+    ffi (1.12.2)
     formatador (0.2.5)
     forwardable-extended (2.6.0)
     guard (2.14.2)
@@ -50,9 +50,9 @@ GEM
       typhoeus (~> 1.3)
       yell (~> 2.0)
     http_parser.rb (0.6.0)
-    i18n (0.9.1)
+    i18n (0.9.5)
       concurrent-ruby (~> 1.0)
-    jekyll (3.7.0)
+    jekyll (3.7.4)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
@@ -69,25 +69,24 @@ GEM
       json (~> 2.0)
       nokogiri (~> 1.7)
       therubyracer (~> 0.12)
-    jekyll-sass-converter (1.5.1)
+    jekyll-sass-converter (1.5.2)
       sass (~> 3.4)
     jekyll-seo-tag (2.4.0)
       jekyll (~> 3.3)
     jekyll-sitemap (1.1.1)
       jekyll (~> 3.3)
-    jekyll-watch (2.0.0)
+    jekyll-watch (2.2.1)
       listen (~> 3.0)
     jekyll_github_sample (0.3.1)
       activesupport (~> 4.0)
       jekyll (~> 3.0)
     json (2.1.0)
-    kramdown (1.16.2)
+    kramdown (1.17.0)
     libv8 (3.16.14.19)
-    liquid (4.0.0)
-    listen (3.1.5)
-      rb-fsevent (~> 0.9, >= 0.9.4)
-      rb-inotify (~> 0.9, >= 0.9.7)
-      ruby_dep (~> 1.2)
+    liquid (4.0.3)
+    listen (3.2.1)
+      rb-fsevent (~> 0.10, >= 0.10.3)
+      rb-inotify (~> 0.9, >= 0.9.10)
     lumberjack (1.0.12)
     mercenary (0.3.6)
     method_source (0.9.0)
@@ -101,22 +100,21 @@ GEM
       nenv (~> 0.1)
       shellany (~> 0.0)
     parallel (1.12.1)
-    pathutil (0.16.1)
+    pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     pry (0.11.3)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    public_suffix (3.0.1)
+    public_suffix (4.0.3)
     pygments.rb (1.2.1)
       multi_json (>= 1.0.0)
-    rb-fsevent (0.10.2)
-    rb-inotify (0.9.10)
-      ffi (>= 0.5.0, < 2)
+    rb-fsevent (0.10.3)
+    rb-inotify (0.10.1)
+      ffi (~> 1.0)
     ref (2.0.0)
-    rouge (3.1.0)
-    ruby_dep (1.5.0)
-    safe_yaml (1.0.4)
-    sass (3.5.5)
+    rouge (3.17.0)
+    safe_yaml (1.0.5)
+    sass (3.7.4)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)