diff --git a/Gemfile.lock b/Gemfile.lock
index e04bd8e..3b674bd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -3,21 +3,29 @@ 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)
+    console (1.16.2)
+      fiber-local
     ethon (0.12.0)
       ffi (>= 1.3.0)
     ffi (1.12.2)
+    fiber-local (1.0.0)
     forwardable-extended (2.6.0)
-    html-proofer (3.15.1)
+    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)
-    htmlbeautifier (1.3.1)
+      zeitwerk (~> 2.5)
+    htmlbeautifier (1.4.2)
     htmlcompressor (0.4.0)
+    io-event (1.1.1)
     jekyll (3.4.3)
       addressable (~> 2.4)
       colorator (~> 1.0)
@@ -44,19 +52,18 @@ GEM
       listen (~> 3.0)
     kramdown (1.17.0)
     liquid (3.0.6)
-    listen (3.2.1)
+    listen (3.7.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.3.6)
-    mini_portile2 (2.4.0)
-    nokogiri (1.10.9)
-      mini_portile2 (~> 2.4.0)
-    nokogumbo (2.0.2)
-      nokogiri (~> 1.8, >= 1.8.4)
-    parallel (1.19.1)
+    mini_portile2 (2.8.0)
+    nokogiri (1.13.9)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (4.0.3)
+    racc (1.6.0)
     rainbow (3.0.0)
     rb-fsevent (0.10.3)
     rb-inotify (0.10.1)
@@ -68,9 +75,11 @@ GEM
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
+    timers (4.3.5)
     typhoeus (1.3.1)
       ethon (>= 0.9.0)
     yell (2.2.2)
+    zeitwerk (2.6.1)
 
 PLATFORMS
   ruby