diff --git a/Gemfile b/Gemfile
index 210e5cbc4..6a27e6433 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,11 +1,11 @@
 source "https://rubygems.org"
 
 
-gem "jekyll", "4.2.2"
+gem "jekyll", "4.3.4"
 gem "webrick", "~> 1.7"
 
 group :jekyll_plugins do
-   gem "jekyll-feed", "~> 0.16.0"
+   gem "jekyll-feed", "~> 0.17.0"
    gem 'jekyll-asciidoc', '~> 3.0.0'
    gem 'rouge'
    gem 'jekyll-seo-tag'
diff --git a/Gemfile.lock b/Gemfile.lock
index eaa08e271..c9316fdd8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,40 +1,41 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.8.4)
-      public_suffix (>= 2.0.2, < 6.0)
+    addressable (2.8.7)
+      public_suffix (>= 2.0.2, < 7.0)
     asciidoctor (2.0.18)
     colorator (1.1.0)
-    concurrent-ruby (1.2.2)
+    concurrent-ruby (1.3.4)
     em-websocket (0.5.3)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0)
     eventmachine (1.2.7)
     eventmachine (1.2.7-x64-mingw32)
-    ffi (1.15.5)
+    ffi (1.17.0)
     forwardable-extended (2.6.0)
     http_parser.rb (0.8.0)
-    i18n (1.12.0)
+    i18n (1.14.6)
       concurrent-ruby (~> 1.0)
-    jekyll (4.2.2)
+    jekyll (4.3.4)
       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-asciidoc (3.0.0)
       asciidoctor (>= 1.5.0)
       jekyll (>= 3.0.0)
-    jekyll-feed (0.16.0)
+    jekyll-feed (0.17.0)
       jekyll (>= 3.7, < 5.0)
     jekyll-sass-converter (2.2.0)
       sassc (> 2.0.1, < 3.0)
@@ -49,17 +50,17 @@ GEM
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
     liquid (4.0.4)
-    listen (3.8.0)
+    listen (3.9.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.4.0)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (5.0.1)
+    public_suffix (5.1.1)
     rb-fsevent (0.11.2)
-    rb-inotify (0.10.1)
+    rb-inotify (0.11.1)
       ffi (~> 1.0)
-    rexml (3.2.5)
+    rexml (3.3.7)
     rouge (3.30.0)
     safe_yaml (1.0.5)
     sassc (2.4.0)
@@ -76,9 +77,9 @@ PLATFORMS
   x64-mingw32
 
 DEPENDENCIES
-  jekyll (= 4.2.2)
+  jekyll (= 4.3.4)
   jekyll-asciidoc (~> 3.0.0)
-  jekyll-feed (~> 0.16.0)
+  jekyll-feed (~> 0.17.0)
   jekyll-seo-tag
   jekyll-sitemap
   rouge