diff --git a/Gemfile b/Gemfile
index 089ae77..d5ebfae 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,11 +8,11 @@ source "https://rubygems.org"
 #
 # This will help ensure the proper Jekyll version is running.
 # Happy Jekylling!
-gem "jekyll", "~> 3.8.5"
+gem "jekyll", "~> 3.9.0"
 
 # This is the default theme for new Jekyll sites. You may change this to anything you like.
-gem "minima", "~> 2.0"
-gem "just-the-docs"
+gem "minima", "~> 2.5", ">= 2.5.0"
+gem "just-the-docs", ">= 0.2.8"
 
 # If you want to use GitHub Pages, remove the "gem "jekyll"" above and
 # uncomment the line below. To upgrade, run `bundle update github-pages`.
@@ -20,7 +20,7 @@ gem "just-the-docs"
 
 # If you have any plugins, put them here!
 group :jekyll_plugins do
-  gem "jekyll-feed", "~> 0.6"
+  gem "jekyll-feed", "~> 0.11", ">= 0.11.0"
 end
 
 # Windows does not include zoneinfo files, so bundle the tzinfo-data gem
diff --git a/Gemfile.lock b/Gemfile.lock
index e25c254..b3f635c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,67 +1,68 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.6.0)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.2)
+      public_suffix (>= 2.0.2, < 6.0)
     colorator (1.1.0)
-    concurrent-ruby (1.1.5)
-    em-websocket (0.5.1)
+    concurrent-ruby (1.2.2)
+    em-websocket (0.5.3)
       eventmachine (>= 0.12.9)
-      http_parser.rb (~> 0.6.0)
+      http_parser.rb (~> 0)
     eventmachine (1.2.7)
     eventmachine (1.2.7-x64-mingw32)
-    ffi (1.10.0)
-    ffi (1.10.0-x64-mingw32)
+    ffi (1.15.5)
+    ffi (1.15.5-x64-mingw32)
     forwardable-extended (2.6.0)
-    http_parser.rb (0.6.0)
-    i18n (0.9.5)
+    http_parser.rb (0.8.0)
+    i18n (1.12.0)
       concurrent-ruby (~> 1.0)
-    jekyll (3.8.5)
+    jekyll (3.9.3)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
-      i18n (~> 0.7)
+      i18n (>= 0.7, < 2)
       jekyll-sass-converter (~> 1.0)
       jekyll-watch (~> 2.0)
-      kramdown (~> 1.14)
+      kramdown (>= 1.17, < 3)
       liquid (~> 4.0)
       mercenary (~> 0.3.3)
       pathutil (~> 0.9)
       rouge (>= 1.7, < 4)
       safe_yaml (~> 1.0)
-    jekyll-feed (0.11.0)
-      jekyll (~> 3.3)
+    jekyll-feed (0.17.0)
+      jekyll (>= 3.7, < 5.0)
     jekyll-sass-converter (1.5.2)
       sass (~> 3.4)
-    jekyll-seo-tag (2.5.0)
-      jekyll (~> 3.3)
-    jekyll-watch (2.1.2)
+    jekyll-seo-tag (2.8.0)
+      jekyll (>= 3.8, < 5.0)
+    jekyll-watch (2.2.1)
       listen (~> 3.0)
-    just-the-docs (0.2.3)
-      jekyll (~> 3.8.5)
-      rake (~> 12.3.1)
-    kramdown (1.17.0)
-    liquid (4.0.2)
-    listen (3.1.5)
-      rb-fsevent (~> 0.9, >= 0.9.4)
-      rb-inotify (~> 0.9, >= 0.9.7)
-      ruby_dep (~> 1.2)
+    just-the-docs (0.4.2)
+      jekyll (>= 3.8.5)
+      jekyll-seo-tag (>= 2.0)
+      rake (>= 12.3.1)
+    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)
-    minima (2.5.0)
-      jekyll (~> 3.5)
+    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 (3.0.3)
-    rake (12.3.2)
-    rb-fsevent (0.10.3)
-    rb-inotify (0.10.0)
+    public_suffix (5.0.1)
+    rake (13.0.6)
+    rb-fsevent (0.11.2)
+    rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rouge (3.3.0)
-    ruby_dep (1.5.0)
+    rexml (3.2.5)
+    rouge (3.30.0)
     safe_yaml (1.0.5)
-    sass (3.7.3)
+    sass (3.7.4)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
@@ -76,11 +77,11 @@ PLATFORMS
   x64-mingw32
 
 DEPENDENCIES
-  jekyll (~> 3.8.5)
-  jekyll-feed (~> 0.6)
-  just-the-docs
-  minima (~> 2.0)
+  jekyll (~> 3.9.0)
+  jekyll-feed (~> 0.11, >= 0.11.0)
+  just-the-docs (>= 0.2.8)
+  minima (~> 2.5, >= 2.5.0)
   tzinfo-data
 
 BUNDLED WITH
-   2.0.1
+   2.1.4