diff --git a/Gemfile b/Gemfile
index 186d8d6..cb6acc8 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,7 +4,7 @@ gem 'activesupport'
 gem "actionview", ">= 5.2.4.2"
 # gem 'github-pages-health-check'
 gem 'html-proofer', group: :development
-gem 'jekyll', '~> 4.2'
+gem 'jekyll', '~> 4.3'
 group :jekyll_plugins do
   gem 'jekyll-avatar'
   gem 'jekyll-coffeescript'
diff --git a/Gemfile.lock b/Gemfile.lock
index 4079b26..176109a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -26,8 +26,8 @@ GEM
       i18n (>= 1.6, < 2)
       minitest (>= 5.1)
       tzinfo (~> 2.0)
-    addressable (2.8.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     ast (2.4.2)
     builder (3.2.4)
     coffee-script (2.4.1)
@@ -87,21 +87,22 @@ GEM
     http_parser.rb (0.8.0)
     i18n (1.12.0)
       concurrent-ruby (~> 1.0)
-    jekyll (4.2.2)
+    jekyll (4.3.1)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
       i18n (~> 1.0)
-      jekyll-sass-converter (~> 2.0)
+      jekyll-sass-converter (>= 2.0, < 4.0)
       jekyll-watch (~> 2.0)
-      kramdown (~> 2.3)
+      kramdown (~> 2.3, >= 2.3.1)
       kramdown-parser-gfm (~> 1.0)
       liquid (~> 4.0)
-      mercenary (~> 0.4.0)
+      mercenary (>= 0.3.6, < 0.5)
       pathutil (~> 0.9)
-      rouge (~> 3.0)
+      rouge (>= 3.0, < 5.0)
       safe_yaml (~> 1.0)
-      terminal-table (~> 2.0)
+      terminal-table (>= 1.8, < 4.0)
+      webrick (~> 1.7)
     jekyll-avatar (0.8.0)
       jekyll (>= 3.0, < 5.0)
     jekyll-coffeescript (2.0.0)
@@ -190,7 +191,7 @@ GEM
       ast (~> 2.4.1)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (4.0.7)
+    public_suffix (5.0.0)
     racc (1.6.0)
     rack (2.2.4)
     rack-test (2.0.2)
@@ -246,6 +247,7 @@ GEM
     tzinfo (2.0.5)
       concurrent-ruby (~> 1.0)
     unicode-display_width (1.8.0)
+    webrick (1.7.0)
     yell (2.2.2)
     zeitwerk (2.6.1)
 
@@ -257,7 +259,7 @@ DEPENDENCIES
   actionview (>= 5.2.4.2)
   activesupport
   html-proofer
-  jekyll (~> 4.2)
+  jekyll (~> 4.3)
   jekyll-avatar
   jekyll-coffeescript
   jekyll-commonmark-ghpages