diff --git a/Gemfile.lock b/Gemfile.lock
index c96fa96..563bd24 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,25 +7,25 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.5.1)
-      public_suffix (~> 2.0, >= 2.0.2)
+    addressable (2.7.0)
+      public_suffix (>= 2.0.2, < 5.0)
     coffee-script (2.4.1)
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
     colorator (1.1.0)
-    ethon (0.10.1)
+    ethon (0.12.0)
       ffi (>= 1.3.0)
     execjs (2.7.0)
-    faraday (0.12.1)
+    faraday (1.0.1)
       multipart-post (>= 1.2, < 3)
-    ffi (1.9.18)
+    ffi (1.13.0)
     forwardable-extended (2.6.0)
     gemoji (3.0.0)
     github-pages (134)
       activesupport (= 4.2.7)
       github-pages-health-check (= 1.3.3)
-      jekyll (= 3.4.3)
+      jekyll (>= 4.1.0)
       jekyll-avatar (= 0.4.2)
       jekyll-coffeescript (= 1.0.1)
       jekyll-default-layout (= 0.1.4)
@@ -72,7 +72,7 @@ GEM
       typhoeus (~> 0.7)
     html-pipeline (2.5.0)
       activesupport (>= 2)
-      nokogiri (>= 1.4)
+      nokogiri (>= 1.10)
     i18n (0.8.1)
     jekyll (3.4.3)
       addressable (~> 2.4)
@@ -160,27 +160,28 @@ GEM
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9.7)
     mercenary (0.3.6)
-    mini_portile2 (2.1.0)
+    mini_portile2 (2.4.0)
     minima (2.0.0)
     minitest (5.10.1)
-    multipart-post (2.0.0)
-    net-dns (0.8.0)
-    nokogiri (1.7.1)
-      mini_portile2 (~> 2.1.0)
-    octokit (4.7.0)
+    multipart-post (2.1.1)
+    net-dns (0.9.0)
+    nokogiri (1.10.9)
+      mini_portile2 (~> 2.4.0)
+    octokit (4.18.0)
+      faraday (>= 0.9)
       sawyer (~> 0.8.0, >= 0.5.3)
     pathutil (0.14.0)
       forwardable-extended (~> 2.6)
     public_suffix (2.0.5)
-    rb-fsevent (0.9.8)
-    rb-inotify (0.9.8)
-      ffi (>= 0.5.0)
+    rb-fsevent (0.10.4)
+    rb-inotify (0.10.1)
+      ffi (~> 1.0)
     rouge (1.11.1)
     safe_yaml (1.0.4)
     sass (3.4.23)
-    sawyer (0.8.1)
-      addressable (>= 2.3.5, < 2.6)
-      faraday (~> 0.8, < 1.0)
+    sawyer (0.8.2)
+      addressable (>= 2.3.5)
+      faraday (> 0.8, < 2.0)
     terminal-table (1.7.3)
       unicode-display_width (~> 1.1.1)
     thread_safe (0.3.6)