diff --git a/Gemfile b/Gemfile
index a9bf7b3..0986bf5 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,9 +7,12 @@ ruby RUBY_VERSION
 #
 #     bundle exec jekyll serve
 #
-# This will help ensure the proper Jekyll version is running.
-# Happy Jekylling!
-gem "jekyll", "4.2.0"
+
+gem "jekyll", "4.2.2"
+
+# Fix development command "jekyll serve"
+# Can be removed when upgrading to Jekyll 4.3
+gem "webrick", "~> 1.8"
 
 # This is the default theme for new Jekyll sites. You may change this to anything you like.
 gem "minima", "~> 2.5", ">= 2.5.1"
@@ -20,7 +23,7 @@ gem "minima", "~> 2.5", ">= 2.5.1"
 
 # If you have any plugins, put them here!
 group :jekyll_plugins do
-   gem "jekyll-feed", "~> 0.15", ">= 0.15.1"
+   gem "jekyll-feed", "~> 0.16", ">= 0.16.0"
    gem "jekyll-paginate"
    gem 'jekyll-redirect-from'
 end
@@ -44,5 +47,3 @@ end
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 # gem "rake"
 # gem "html-proofer"
-
-gem "webrick", "~> 1.8"
diff --git a/Gemfile.lock b/Gemfile.lock
index 8240962..8e1634a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,20 +1,20 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.8.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.6)
+      public_suffix (>= 2.0.2, < 6.0)
     colorator (1.1.0)
-    concurrent-ruby (1.1.8)
-    em-websocket (0.5.2)
+    concurrent-ruby (1.2.3)
+    em-websocket (0.5.3)
       eventmachine (>= 0.12.9)
-      http_parser.rb (~> 0.6.0)
+      http_parser.rb (~> 0)
     eventmachine (1.2.7)
-    ffi (1.15.0)
+    ffi (1.16.3)
     forwardable-extended (2.6.0)
-    http_parser.rb (0.6.0)
-    i18n (1.8.9)
+    http_parser.rb (0.8.0)
+    i18n (1.14.5)
       concurrent-ruby (~> 1.0)
-    jekyll (4.2.0)
+    jekyll (4.2.2)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
@@ -29,23 +29,23 @@ GEM
       rouge (~> 3.0)
       safe_yaml (~> 1.0)
       terminal-table (~> 2.0)
-    jekyll-feed (0.15.1)
+    jekyll-feed (0.17.0)
       jekyll (>= 3.7, < 5.0)
     jekyll-paginate (1.1.0)
     jekyll-redirect-from (0.16.0)
       jekyll (>= 3.3, < 5.0)
-    jekyll-sass-converter (2.1.0)
+    jekyll-sass-converter (2.2.0)
       sassc (> 2.0.1, < 3.0)
-    jekyll-seo-tag (2.7.1)
+    jekyll-seo-tag (2.8.0)
       jekyll (>= 3.8, < 5.0)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
-    kramdown (2.3.1)
+    kramdown (2.4.0)
       rexml
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
-    liquid (4.0.3)
-    listen (3.5.0)
+    liquid (4.0.4)
+    listen (3.9.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.4.0)
@@ -55,31 +55,35 @@ GEM
       jekyll-seo-tag (~> 2.1)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (4.0.6)
-    rb-fsevent (0.10.4)
+    public_suffix (5.0.5)
+    rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.2.5)
-    rouge (3.26.0)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
+    rouge (3.30.0)
     safe_yaml (1.0.5)
     sassc (2.4.0)
       ffi (~> 1.9)
+    strscan (3.1.0)
     terminal-table (2.0.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
-    unicode-display_width (1.7.0)
+    unicode-display_width (1.8.0)
+    webrick (1.8.1)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  jekyll (= 4.2.0)
-  jekyll-feed (~> 0.15, >= 0.15.1)
+  jekyll (= 4.2.2)
+  jekyll-feed (~> 0.16, >= 0.16.0)
   jekyll-paginate
   jekyll-redirect-from
   minima (~> 2.5, >= 2.5.1)
+  webrick (~> 1.8)
 
 RUBY VERSION
-   ruby 2.7.0p0
+   ruby 3.0.2p107
 
 BUNDLED WITH
    2.1.4