diff --git a/src/Gemfile b/src/Gemfile
index 0a9d458..ece2ff8 100644
--- a/src/Gemfile
+++ b/src/Gemfile
@@ -1,43 +1,43 @@
 source "https://rubygems.org"
 ruby RUBY_VERSION
 
 # Hello! This is where you manage which Jekyll version is used to run.
 # When you want to use a different version, change it below, save the
 # file and run `bundle install`. Run Jekyll with `bundle exec`, like so:
 #
 #     bundle exec jekyll serve
 #
 # This will help ensure the proper Jekyll version is running.
 # Happy Jekylling!
 
 # jekyll-assets does not support jekyll 4 yet
 gem "jekyll", "~> 3.0"
 
 # This is the default theme for new Jekyll sites. You may change this to anything you like.
 gem "minima", "~> 2.0"
 
 # not sure why jekyll doesn't generate this dependency automatically
 gem "kramdown-parser-gfm"
 
-# Raise rack dependency version to avoid security issue
-gem "rack", ">= 2.1.4"
+# Raise rack dependency version to avoid security issues
+gem "rack", ">= 2.2.3.1"
 
 # Needed by jekyll-assets
 group :jekyll_assets_deps do
    gem "public_suffix"
    gem "ruby_dep"
    gem "rb-inotify"
    gem "listen"
    gem "jekyll-watch"
    gem "json"
 end
 
 # If you want to use GitHub Pages, remove the "gem "jekyll"" above and
 # uncomment the line below. To upgrade, run `bundle update github-pages`.
 # gem "github-pages", group: :jekyll_plugins
 
 # If you have any plugins, put them here!
 group :jekyll_plugins do
    gem "jekyll-assets", "~> 2.0"
    gem "font-awesome-sass"
 end
diff --git a/src/Gemfile.lock b/src/Gemfile.lock
index e3ebc09..ae74001 100644
--- a/src/Gemfile.lock
+++ b/src/Gemfile.lock
@@ -1,108 +1,108 @@
 GEM
   remote: https://rubygems.org/
   specs:
     addressable (2.8.0)
       public_suffix (>= 2.0.2, < 5.0)
     colorator (1.1.0)
     concurrent-ruby (1.1.9)
     em-websocket (0.5.2)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
     eventmachine (1.2.7)
     extras (0.3.0)
       forwardable-extended (~> 2.5)
     fastimage (2.2.4)
     ffi (1.15.3)
     font-awesome-sass (5.15.1)
       sassc (>= 1.11)
     forwardable-extended (2.6.0)
     http_parser.rb (0.6.0)
     i18n (0.9.5)
       concurrent-ruby (~> 1.0)
     jekyll (3.9.1)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
       i18n (~> 0.7)
       jekyll-sass-converter (~> 1.0)
       jekyll-watch (~> 2.0)
       kramdown (>= 1.17, < 3)
       liquid (~> 4.0)
       mercenary (~> 0.3.3)
       pathutil (~> 0.9)
       rouge (>= 1.7, < 4)
       safe_yaml (~> 1.0)
     jekyll-assets (2.3.0)
       concurrent-ruby (~> 1.0)
       extras (~> 0.2)
       fastimage (~> 2.0, >= 1.8)
       jekyll (~> 3.1, >= 3.0)
       pathutil (>= 0.8)
       rack (> 1, < 3)
       sprockets (~> 3.3, < 3.8)
     jekyll-feed (0.15.1)
       jekyll (>= 3.7, < 5.0)
     jekyll-sass-converter (1.5.2)
       sass (~> 3.4)
     jekyll-seo-tag (2.7.1)
       jekyll (>= 3.8, < 5.0)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
     json (2.5.1)
     kramdown (2.3.1)
       rexml
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
     liquid (4.0.3)
     listen (3.5.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.3.6)
     minima (2.5.1)
       jekyll (>= 3.5, < 5.0)
       jekyll-feed (~> 0.9)
       jekyll-seo-tag (~> 2.1)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (4.0.6)
-    rack (2.2.3)
+    rack (2.2.3.1)
     rb-fsevent (0.11.0)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     rexml (3.2.5)
     rouge (3.26.0)
     ruby_dep (1.5.0)
     safe_yaml (1.0.5)
     sass (3.7.4)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
     sassc (2.4.0)
       ffi (~> 1.9)
     sprockets (3.7.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
   font-awesome-sass
   jekyll (~> 3.0)
   jekyll-assets (~> 2.0)
   jekyll-watch
   json
   kramdown-parser-gfm
   listen
   minima (~> 2.0)
   public_suffix
-  rack (>= 2.1.4)
+  rack (>= 2.2.3.1)
   rb-inotify
   ruby_dep
 
 RUBY VERSION
    ruby 2.5.9p229
 
 BUNDLED WITH
    1.16.1