diff --git a/Gemfile.lock b/Gemfile.lock
index 27dce845..6ca7dbac 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,25 +2,28 @@ GEM
   remote: https://rubygems.org/
   specs:
     RedCloth (4.2.9)
-    activesupport (4.1.6)
-      i18n (~> 0.6, >= 0.6.9)
-      json (~> 1.7, >= 1.7.7)
+    activesupport (6.0.2.1)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 0.7, < 2)
       minitest (~> 5.1)
-      thread_safe (~> 0.1)
       tzinfo (~> 1.1)
+      zeitwerk (~> 2.2)
+    addressable (2.7.0)
+      public_suffix (>= 2.0.2, < 5.0)
     blankslate (2.1.2.4)
-    celluloid (0.16.0)
-      timers (~> 4.0.0)
-    classifier-reborn (2.0.1)
+    classifier-reborn (2.2.0)
       fast-stemmer (~> 1.0)
-    coffee-script (2.3.0)
+    coffee-script (2.4.1)
       coffee-script-source
       execjs
-    coffee-script-source (1.8.0)
+    coffee-script-source (1.12.2)
     colorator (0.1)
-    execjs (2.2.1)
+    concurrent-ruby (1.1.6)
+    execjs (2.7.0)
+    faraday (1.0.0)
+      multipart-post (>= 1.2, < 3)
     fast-stemmer (1.0.2)
-    ffi (1.9.5)
+    ffi (1.12.2)
     gemoji (2.1.0)
     github-pages (28)
       RedCloth (= 4.2.9)
@@ -37,11 +40,11 @@ GEM
       pygments.rb (= 0.6.0)
       rdiscount (= 2.1.7)
       redcarpet (= 3.1.2)
-    hitimes (1.2.2)
     html-pipeline (1.9.0)
       activesupport (>= 2)
       nokogiri (~> 1.4)
-    i18n (0.6.11)
+    i18n (1.8.2)
+      concurrent-ruby (~> 1.0)
     jekyll (2.4.0)
       classifier-reborn (~> 2.0)
       colorator (~> 0.1)
@@ -59,56 +62,66 @@ GEM
       toml (~> 0.1.0)
     jekyll-coffeescript (1.0.0)
       coffee-script (~> 2.2)
-    jekyll-gist (1.1.0)
+    jekyll-gist (1.5.0)
+      octokit (~> 4.2)
     jekyll-mentions (0.1.3)
       html-pipeline (~> 1.9.0)
       jekyll (~> 2.0)
-    jekyll-paginate (1.0.0)
+    jekyll-paginate (1.1.0)
     jekyll-redirect-from (0.6.2)
       jekyll (~> 2.0)
     jekyll-sass-converter (1.2.0)
       sass (~> 3.2)
     jekyll-sitemap (0.6.0)
-    jekyll-watch (1.1.1)
-      listen (~> 2.7)
+    jekyll-watch (1.5.1)
+      listen (~> 3.0)
     jemoji (0.3.0)
       gemoji (~> 2.0)
       html-pipeline (~> 1.9)
       jekyll (~> 2.0)
-    json (2.2.0)
     kramdown (1.3.1)
     liquid (2.6.1)
-    listen (2.7.11)
-      celluloid (>= 0.15.2)
-      rb-fsevent (>= 0.9.3)
-      rb-inotify (>= 0.9)
+    listen (3.2.1)
+      rb-fsevent (~> 0.10, >= 0.10.3)
+      rb-inotify (~> 0.9, >= 0.9.10)
     maruku (0.7.0)
-    mercenary (0.3.4)
-    mini_portile (0.6.0)
-    minitest (5.4.2)
-    nokogiri (1.6.3.1)
-      mini_portile (= 0.6.0)
+    mercenary (0.3.6)
+    mini_portile2 (2.4.0)
+    minitest (5.14.0)
+    multipart-post (2.1.1)
+    nokogiri (1.10.8)
+      mini_portile2 (~> 2.4.0)
+    octokit (4.16.0)
+      faraday (>= 0.9)
+      sawyer (~> 0.8.0, >= 0.5.3)
     parslet (1.5.0)
       blankslate (~> 2.0)
-    posix-spawn (0.3.9)
+    posix-spawn (0.3.13)
+    public_suffix (4.0.3)
     pygments.rb (0.6.0)
       posix-spawn (~> 0.3.6)
       yajl-ruby (~> 1.1.0)
-    rb-fsevent (0.9.4)
-    rb-inotify (0.9.5)
-      ffi (>= 0.5.0)
+    rb-fsevent (0.10.3)
+    rb-inotify (0.10.1)
+      ffi (~> 1.0)
     rdiscount (2.1.7)
     redcarpet (3.1.2)
-    safe_yaml (1.0.4)
-    sass (3.4.5)
-    thread_safe (0.3.4)
-    timers (4.0.1)
-      hitimes
-    toml (0.1.1)
+    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)
+      rb-inotify (~> 0.9, >= 0.9.7)
+    sawyer (0.8.2)
+      addressable (>= 2.3.5)
+      faraday (> 0.8, < 2.0)
+    thread_safe (0.3.6)
+    toml (0.1.2)
       parslet (~> 1.5.0)
-    tzinfo (1.2.2)
+    tzinfo (1.2.6)
       thread_safe (~> 0.1)
-    yajl-ruby (1.4.1)
+    yajl-ruby (1.1.0)
+    zeitwerk (2.2.2)
 
 PLATFORMS
   ruby