diff --git a/Gemfile.lock b/Gemfile.lock
index 6c18b8baf..358bd811f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,38 +1,46 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (5.2.4.3)
-      concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (>= 0.7, < 2)
-      minitest (~> 5.1)
-      tzinfo (~> 1.1)
+    Ascii85 (1.1.0)
     addressable (2.5.2)
       public_suffix (>= 2.0.2, < 4.0)
+    afm (0.2.2)
+    async (2.6.4)
+      console (~> 1.10)
+      fiber-annotation
+      io-event (~> 1.1)
+      timers (~> 4.1)
     colorator (1.1.0)
-    colorize (0.8.1)
-    concurrent-ruby (1.1.6)
+    concurrent-ruby (1.2.2)
+    console (1.23.2)
+      fiber-annotation
+      fiber-local
     em-websocket (0.5.1)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
-    ethon (0.11.0)
-      ffi (>= 1.3.0)
+    ethon (0.16.0)
+      ffi (>= 1.15.0)
     eventmachine (1.2.7)
     faraday (0.15.2)
       multipart-post (>= 1.2, < 3)
-    ffi (1.9.25)
+    ffi (1.15.5)
+    fiber-annotation (0.2.0)
+    fiber-local (1.0.0)
     forwardable-extended (2.6.0)
-    html-proofer (3.9.2)
-      activesupport (>= 4.2, < 6.0)
+    hashery (2.1.2)
+    html-proofer (5.0.8)
       addressable (~> 2.3)
-      colorize (~> 0.8)
-      mercenary (~> 0.3.2)
-      nokogiri (~> 1.8.1)
-      parallel (~> 1.3)
+      async (~> 2.1)
+      nokogiri (~> 1.13)
+      pdf-reader (~> 2.11)
+      rainbow (~> 3.0)
       typhoeus (~> 1.3)
       yell (~> 2.0)
+      zeitwerk (~> 2.5)
     http_parser.rb (0.6.0)
     i18n (0.9.5)
       concurrent-ruby (~> 1.0)
+    io-event (1.3.2)
     jekyll (3.8.3)
       addressable (~> 2.4)
       colorator (~> 1.0)
@@ -61,22 +69,30 @@ GEM
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
     mercenary (0.3.6)
-    mini_portile2 (2.3.0)
-    minitest (5.14.1)
+    mini_portile2 (2.8.4)
     multipart-post (2.0.0)
-    nokogiri (1.8.4)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.15.4)
+      mini_portile2 (~> 2.8.2)
+      racc (~> 1.4)
     octokit (4.10.0)
       sawyer (~> 0.8.0, >= 0.5.3)
-    parallel (1.12.1)
     pathutil (0.16.1)
       forwardable-extended (~> 2.6)
-    public_suffix (3.0.3)
+    pdf-reader (2.11.0)
+      Ascii85 (~> 1.0)
+      afm (~> 0.2.1)
+      hashery (~> 2.0)
+      ruby-rc4
+      ttfunk
+    public_suffix (3.1.1)
+    racc (1.7.1)
+    rainbow (3.1.1)
     rb-fsevent (0.10.3)
     rb-inotify (0.9.10)
       ffi (>= 0.5.0, < 2)
     rdiscount (2.2.0.1)
     rouge (3.2.1)
+    ruby-rc4 (0.1.5)
     ruby_dep (1.5.0)
     safe_yaml (1.0.4)
     sass (3.5.7)
@@ -87,12 +103,12 @@ GEM
     sawyer (0.8.1)
       addressable (>= 2.3.5, < 2.6)
       faraday (~> 0.8, < 1.0)
-    thread_safe (0.3.6)
-    typhoeus (1.3.0)
+    timers (4.3.5)
+    ttfunk (1.7.0)
+    typhoeus (1.4.0)
       ethon (>= 0.9.0)
-    tzinfo (1.2.7)
-      thread_safe (~> 0.1)
-    yell (2.0.7)
+    yell (2.2.2)
+    zeitwerk (2.6.11)
 
 PLATFORMS
   ruby