diff --git a/Gemfile.lock b/Gemfile.lock
index 4fd1bd9..feaea16 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -3,8 +3,14 @@ GEM
   specs:
     addressable (2.7.0)
       public_suffix (>= 2.0.2, < 5.0)
+    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 (0.5.2)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
@@ -15,18 +21,20 @@ GEM
       multipart-post (>= 1.2, < 3)
       ruby2_keywords
     ffi (1.13.1)
+    fiber-local (1.0.0)
     forwardable-extended (2.6.0)
-    html-proofer (3.16.0)
+    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)
+    io-event (1.1.2)
     jekyll (4.1.1)
       addressable (~> 2.4)
       colorator (~> 1.0)
@@ -62,30 +70,29 @@ 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 (2.4.0)
+    mini_portile2 (2.8.0)
     multipart-post (2.1.1)
-    nokogiri (1.10.10)
-      mini_portile2 (~> 2.4.0)
-    nokogumbo (2.0.2)
-      nokogiri (~> 1.8, >= 1.8.4)
+    nokogiri (1.13.9)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     octokit (4.19.0)
       faraday (>= 0.9)
       sawyer (~> 0.8.0, >= 0.5.3)
-    parallel (1.20.0)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (4.0.6)
+    racc (1.6.0)
     rainbow (3.0.0)
-    rake (13.0.1)
+    rake (13.0.6)
     rb-fsevent (0.10.4)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     rexml (3.2.4)
-    rouge (3.24.0)
+    rouge (3.30.0)
     ruby2_keywords (0.0.2)
     safe_yaml (1.0.5)
     sassc (2.4.0)
@@ -95,10 +102,12 @@ GEM
       faraday (> 0.8, < 2.0)
     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)
     yell (2.2.2)
+    zeitwerk (2.6.1)
 
 PLATFORMS
   ruby