diff --git a/Gemfile.lock b/Gemfile.lock
index 81fd5f4..1d3a218 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,7 +6,7 @@ GEM
     asciidoctor (1.5.8)
     coderay (1.1.1)
     colorator (1.1.0)
-    concurrent-ruby (1.1.7)
+    concurrent-ruby (1.1.8)
     em-websocket (0.5.2)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
@@ -14,26 +14,24 @@ GEM
     faraday (1.1.0)
       multipart-post (>= 1.2, < 3)
       ruby2_keywords
-    ffi (1.13.1)
+    ffi (1.15.0)
     forwardable-extended (2.6.0)
     http_parser.rb (0.6.0)
-    i18n (1.8.5)
+    i18n (0.9.5)
       concurrent-ruby (~> 1.0)
-    jekyll (3.9)
+    jekyll (3.9.0)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
-      i18n (~> 1.0)
-      jekyll-sass-converter (~> 2.0)
+      i18n (~> 0.7)
+      jekyll-sass-converter (~> 1.0)
       jekyll-watch (~> 2.0)
-      kramdown (~> 2.1)
-      kramdown-parser-gfm (~> 1.0)
+      kramdown (>= 1.17, < 3)
       liquid (~> 4.0)
-      mercenary (~> 0.4.0)
+      mercenary (~> 0.3.3)
       pathutil (~> 0.9)
-      rouge (~> 3.0)
+      rouge (>= 1.7, < 4)
       safe_yaml (~> 1.0)
-      terminal-table (~> 1.8)
     jekyll-asciidoc (3.0.0)
       asciidoctor (>= 1.5.0)
       jekyll (>= 3.0.0)
@@ -42,21 +40,19 @@ GEM
     jekyll-gist (1.5.0)
       octokit (~> 4.2)
     jekyll-paginate (1.1.0)
-    jekyll-sass-converter (2.1.0)
-      sassc (> 2.0.1, < 3.0)
+    jekyll-sass-converter (1.5.2)
+      sass (~> 3.4)
     jekyll-sitemap (1.4.0)
-      jekyll (3.9)
+      jekyll (= 3.9)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
-    kramdown (2.3.0)
+    kramdown (2.3.1)
       rexml
-    kramdown-parser-gfm (1.1.0)
-      kramdown (~> 2.0)
     liquid (4.0.3)
     listen (3.2.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
-    mercenary (0.4.0)
+    mercenary (0.3.6)
     multipart-post (2.1.1)
     octokit (4.19.0)
       faraday (>= 0.9)
@@ -71,14 +67,14 @@ GEM
     rouge (3.24.0)
     ruby2_keywords (0.0.2)
     safe_yaml (1.0.5)
-    sassc (2.4.0)
-      ffi (~> 1.9)
+    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)
     sawyer (0.8.2)
       addressable (>= 2.3.5)
       faraday (> 0.8, < 2.0)
-    terminal-table (1.8.0)
-      unicode-display_width (~> 1.1, >= 1.1.1)
-    unicode-display_width (1.7.0)
 
 PLATFORMS
   ruby