diff --git a/Gemfile.lock b/Gemfile.lock
index 1b112c8..b833080 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,10 +1,16 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.8.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
+    async (2.2.1)
+      console (~> 1.10)
+      io-event (~> 1.1.0)
+      timers (~> 4.1)
     colorator (1.1.0)
-    concurrent-ruby (1.1.7)
+    concurrent-ruby (1.1.10)
+    console (1.16.2)
+      fiber-local
     em-websocket (0.5.1)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
@@ -12,33 +18,36 @@ GEM
       ffi (>= 1.3.0)
     eventmachine (1.2.7)
     ffi (1.13.1)
+    fiber-local (1.0.0)
     forwardable-extended (2.6.0)
-    html-proofer (3.15.3)
+    html-proofer (5.0.0)
       addressable (~> 2.3)
-      mercenary (~> 0.3)
-      nokogumbo (~> 2.0)
-      parallel (~> 1.3)
+      async (~> 2.1)
+      nokogiri (~> 1.13)
       rainbow (~> 3.0)
       typhoeus (~> 1.3)
       yell (~> 2.0)
+      zeitwerk (~> 2.5)
     http_parser.rb (0.6.0)
-    i18n (1.8.5)
+    i18n (1.12.0)
       concurrent-ruby (~> 1.0)
-    jekyll (4.1.1)
+    io-event (1.1.2)
+    jekyll (4.3.0)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
       i18n (~> 1.0)
-      jekyll-sass-converter (~> 2.0)
+      jekyll-sass-converter (>= 2.0, < 4.0)
       jekyll-watch (~> 2.0)
-      kramdown (~> 2.1)
+      kramdown (~> 2.3, >= 2.3.1)
       kramdown-parser-gfm (~> 1.0)
       liquid (~> 4.0)
-      mercenary (~> 0.4.0)
+      mercenary (>= 0.3.6, < 0.5)
       pathutil (~> 0.9)
-      rouge (~> 3.0)
+      rouge (>= 3.0, < 5.0)
       safe_yaml (~> 1.0)
-      terminal-table (~> 1.8)
+      terminal-table (>= 1.8, < 4.0)
+      webrick (~> 1.7)
     jekyll-paginate (1.1.0)
     jekyll-redirect-from (0.16.0)
       jekyll (>= 3.3, < 5.0)
@@ -53,17 +62,14 @@ GEM
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
     liquid (4.0.3)
-    listen (3.2.1)
+    listen (3.7.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.4.0)
     mini_portile2 (2.8.0)
-    nokogiri (1.13.4)
+    nokogiri (1.13.9)
       mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
-    nokogumbo (2.0.2)
-      nokogiri (~> 1.8, >= 1.8.4)
-    parallel (1.19.2)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (4.0.6)
@@ -79,10 +85,13 @@ GEM
       ffi (~> 1.9)
     terminal-table (1.8.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
+    timers (4.3.5)
     typhoeus (1.4.0)
       ethon (>= 0.9.0)
     unicode-display_width (1.7.0)
+    webrick (1.7.0)
     yell (2.2.2)
+    zeitwerk (2.6.1)
 
 PLATFORMS
   ruby