diff --git a/Gemfile b/Gemfile
index db91477..14defb2 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,7 +10,7 @@ ruby RUBY_VERSION
 # This will help ensure the proper Jekyll version is running.
 # Happy Jekylling!
 #
-gem "jekyll", "~> 3.6.3"
+gem "jekyll", "~> 3.9.0"
 gem "coderay", "~> 1.1.2"
 
 # If you want to use GitHub Pages, remove the "gem "jekyll"" above and
@@ -22,6 +22,6 @@ gem "coderay", "~> 1.1.2"
 #   gem "jekyll-github-metadata", "~> 1.0"
 # end
 group :jekyll_plugins do
-    gem "jekyll-asciidoc", ">= 2.1.0"
+    gem "jekyll-asciidoc", ">= 3.0.0"
 end
 gem "json", ">= 2.3.0"
diff --git a/Gemfile.lock b/Gemfile.lock
index 7b06565..ca5c232 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,45 +1,57 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 5.0)
-    asciidoctor (2.0.10)
+    addressable (2.8.2)
+      public_suffix (>= 2.0.2, < 6.0)
+    asciidoctor (2.0.18)
     coderay (1.1.3)
     colorator (1.1.0)
-    ffi (1.13.1)
+    concurrent-ruby (1.2.2)
+    em-websocket (0.5.3)
+      eventmachine (>= 0.12.9)
+      http_parser.rb (~> 0)
+    eventmachine (1.2.7)
+    ffi (1.15.5)
     forwardable-extended (2.6.0)
-    jekyll (3.6.3)
+    http_parser.rb (0.8.0)
+    i18n (1.12.0)
+      concurrent-ruby (~> 1.0)
+    jekyll (3.9.3)
       addressable (~> 2.4)
       colorator (~> 1.0)
+      em-websocket (~> 0.5)
+      i18n (>= 0.7, < 2)
       jekyll-sass-converter (~> 1.0)
-      jekyll-watch (~> 1.1)
-      kramdown (~> 1.14)
+      jekyll-watch (~> 2.0)
+      kramdown (>= 1.17, < 3)
       liquid (~> 4.0)
       mercenary (~> 0.3.3)
       pathutil (~> 0.9)
-      rouge (>= 1.7, < 3)
+      rouge (>= 1.7, < 4)
       safe_yaml (~> 1.0)
     jekyll-asciidoc (3.0.0)
       asciidoctor (>= 1.5.0)
       jekyll (>= 3.0.0)
     jekyll-sass-converter (1.5.2)
       sass (~> 3.4)
-    jekyll-watch (1.5.1)
+    jekyll-watch (2.2.1)
       listen (~> 3.0)
     json (2.3.1)
-    kramdown (1.17.0)
-    liquid (4.0.3)
-    listen (3.2.1)
+    kramdown (2.4.0)
+      rexml
+    liquid (4.0.4)
+    listen (3.8.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.3.6)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (4.0.6)
-    rb-fsevent (0.10.4)
+    public_suffix (5.0.1)
+    rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rouge (2.2.1)
+    rexml (3.2.5)
+    rouge (3.30.0)
     safe_yaml (1.0.5)
     sass (3.7.4)
       sass-listen (~> 4.0.0)
@@ -52,12 +64,12 @@ PLATFORMS
 
 DEPENDENCIES
   coderay (~> 1.1.2)
-  jekyll (~> 3.6.3)
-  jekyll-asciidoc (>= 2.1.0)
+  jekyll (~> 3.9.0)
+  jekyll-asciidoc (>= 3.0.0)
   json (>= 2.3.0)
 
 RUBY VERSION
-   ruby 2.7.1p83
+   ruby 2.7.6p219
 
 BUNDLED WITH
-   1.17.1
+   1.17.3