diff --git a/Gemfile b/Gemfile
index 7cbc9c8..56d03c7 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,18 +1,6 @@
 source 'https://rubygems.org'
 
-# 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!
-# gem 'jekyll', '3.5.0'
-
-# 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
+gem 'jekyll', '3.5.0'
 
 group :development do
   gem 'rake'
diff --git a/Gemfile.lock b/Gemfile.lock
index 63f2eb2..3cce126 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,90 +1,24 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (4.2.8)
-      i18n (~> 0.7)
-      minitest (~> 5.1)
-      thread_safe (~> 0.3, >= 0.3.4)
-      tzinfo (~> 1.1)
     addressable (2.5.1)
       public_suffix (~> 2.0, >= 2.0.2)
     ast (2.3.0)
-    coffee-script (2.4.1)
-      coffee-script-source
-      execjs
-    coffee-script-source (1.12.2)
     colorator (1.1.0)
     concurrent-ruby (1.0.5)
-    ethon (0.10.1)
-      ffi (>= 1.3.0)
     execjs (2.7.0)
     extras (0.3.0)
       forwardable-extended (~> 2.5)
-    faraday (0.12.1)
-      multipart-post (>= 1.2, < 3)
     fastimage (2.1.0)
     ffi (1.9.18)
     forwardable-extended (2.6.0)
-    gemoji (3.0.0)
-    github-pages (141)
-      activesupport (= 4.2.8)
-      github-pages-health-check (= 1.3.4)
-      jekyll (= 3.4.3)
-      jekyll-avatar (= 0.4.2)
-      jekyll-coffeescript (= 1.0.1)
-      jekyll-default-layout (= 0.1.4)
-      jekyll-feed (= 0.9.2)
-      jekyll-gist (= 1.4.0)
-      jekyll-github-metadata (= 2.4.0)
-      jekyll-mentions (= 1.2.0)
-      jekyll-optional-front-matter (= 0.1.2)
-      jekyll-paginate (= 1.1.0)
-      jekyll-readme-index (= 0.1.0)
-      jekyll-redirect-from (= 0.12.1)
-      jekyll-relative-links (= 0.4.1)
-      jekyll-sass-converter (= 1.5.0)
-      jekyll-seo-tag (= 2.2.3)
-      jekyll-sitemap (= 1.0.0)
-      jekyll-swiss (= 0.4.0)
-      jekyll-theme-architect (= 0.0.4)
-      jekyll-theme-cayman (= 0.0.4)
-      jekyll-theme-dinky (= 0.0.4)
-      jekyll-theme-hacker (= 0.0.4)
-      jekyll-theme-leap-day (= 0.0.4)
-      jekyll-theme-merlot (= 0.0.4)
-      jekyll-theme-midnight (= 0.0.4)
-      jekyll-theme-minimal (= 0.0.4)
-      jekyll-theme-modernist (= 0.0.4)
-      jekyll-theme-primer (= 0.2.1)
-      jekyll-theme-slate (= 0.0.4)
-      jekyll-theme-tactile (= 0.0.4)
-      jekyll-theme-time-machine (= 0.0.4)
-      jekyll-titles-from-headings (= 0.2.0)
-      jemoji (= 0.8.0)
-      kramdown (= 1.13.2)
-      liquid (= 3.0.6)
-      listen (= 3.0.6)
-      mercenary (~> 0.3)
-      minima (= 2.1.1)
-      rouge (= 1.11.1)
-      terminal-table (~> 1.4)
-    github-pages-health-check (1.3.4)
-      addressable (~> 2.3)
-      net-dns (~> 0.8)
-      octokit (~> 4.0)
-      public_suffix (~> 2.0)
-      typhoeus (~> 0.7)
-    html-pipeline (2.6.0)
-      activesupport (>= 2)
-      nokogiri (>= 1.4)
-    i18n (0.8.4)
-    jekyll (3.4.3)
+    jekyll (3.5.0)
       addressable (~> 2.4)
       colorator (~> 1.0)
       jekyll-sass-converter (~> 1.0)
       jekyll-watch (~> 1.1)
       kramdown (~> 1.3)
-      liquid (~> 3.0)
+      liquid (~> 4.0)
       mercenary (~> 0.3.3)
       pathutil (~> 0.9)
       rouge (~> 1.7)
@@ -97,92 +31,22 @@ GEM
       pathutil (>= 0.8)
       rack (~> 1.6)
       sprockets (~> 3.3, < 3.8)
-    jekyll-avatar (0.4.2)
-      jekyll (~> 3.0)
-    jekyll-coffeescript (1.0.1)
-      coffee-script (~> 2.2)
-    jekyll-default-layout (0.1.4)
-      jekyll (~> 3.0)
-    jekyll-feed (0.9.2)
-      jekyll (~> 3.3)
-    jekyll-gist (1.4.0)
-      octokit (~> 4.2)
-    jekyll-github-metadata (2.4.0)
-      jekyll (~> 3.1)
-      octokit (~> 4.0, != 4.4.0)
-    jekyll-mentions (1.2.0)
-      activesupport (~> 4.0)
-      html-pipeline (~> 2.3)
-      jekyll (~> 3.0)
-    jekyll-optional-front-matter (0.1.2)
-      jekyll (~> 3.0)
-    jekyll-paginate (1.1.0)
     jekyll-pants (0.2.1)
       rubypants
-    jekyll-readme-index (0.1.0)
-      jekyll (~> 3.0)
-    jekyll-redirect-from (0.12.1)
-      jekyll (~> 3.3)
-    jekyll-relative-links (0.4.1)
-      jekyll (~> 3.3)
     jekyll-sass-converter (1.5.0)
       sass (~> 3.4)
     jekyll-seo-tag (2.2.3)
       jekyll (~> 3.3)
     jekyll-sitemap (1.0.0)
       jekyll (~> 3.3)
-    jekyll-swiss (0.4.0)
-    jekyll-theme-architect (0.0.4)
-      jekyll (~> 3.3)
-    jekyll-theme-cayman (0.0.4)
-      jekyll (~> 3.3)
-    jekyll-theme-dinky (0.0.4)
-      jekyll (~> 3.3)
-    jekyll-theme-hacker (0.0.4)
-      jekyll (~> 3.3)
-    jekyll-theme-leap-day (0.0.4)
-      jekyll (~> 3.3)
-    jekyll-theme-merlot (0.0.4)
-      jekyll (~> 3.3)
-    jekyll-theme-midnight (0.0.4)
-      jekyll (~> 3.3)
-    jekyll-theme-minimal (0.0.4)
-      jekyll (~> 3.3)
-    jekyll-theme-modernist (0.0.4)
-      jekyll (~> 3.3)
-    jekyll-theme-primer (0.2.1)
-      jekyll (~> 3.3)
-    jekyll-theme-slate (0.0.4)
-      jekyll (~> 3.3)
-    jekyll-theme-tactile (0.0.4)
-      jekyll (~> 3.3)
-    jekyll-theme-time-machine (0.0.4)
-      jekyll (~> 3.3)
-    jekyll-titles-from-headings (0.2.0)
-      jekyll (~> 3.3)
     jekyll-watch (1.5.0)
       listen (~> 3.0, < 3.1)
-    jemoji (0.8.0)
-      activesupport (~> 4.0)
-      gemoji (~> 3.0)
-      html-pipeline (~> 2.2)
-      jekyll (>= 3.0)
-    kramdown (1.13.2)
-    liquid (3.0.6)
-    listen (3.0.6)
-      rb-fsevent (>= 0.9.3)
-      rb-inotify (>= 0.9.7)
+    kramdown (1.14.0)
+    liquid (4.0.0)
+    listen (3.0.8)
+      rb-fsevent (~> 0.9, >= 0.9.4)
+      rb-inotify (~> 0.9, >= 0.9.7)
     mercenary (0.3.6)
-    mini_portile2 (2.2.0)
-    minima (2.1.1)
-      jekyll (~> 3.3)
-    minitest (5.10.2)
-    multipart-post (2.0.0)
-    net-dns (0.8.0)
-    nokogiri (1.8.0)
-      mini_portile2 (~> 2.2.0)
-    octokit (4.7.0)
-      sawyer (~> 0.8.0, >= 0.5.3)
     parser (2.4.0.0)
       ast (~> 2.2)
     pathutil (0.14.0)
@@ -205,20 +69,10 @@ GEM
     ruby-progressbar (1.8.1)
     rubypants (0.6.0)
     safe_yaml (1.0.4)
-    sass (3.4.24)
-    sawyer (0.8.1)
-      addressable (>= 2.3.5, < 2.6)
-      faraday (~> 0.8, < 1.0)
+    sass (3.4.25)
     sprockets (3.7.1)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
-    terminal-table (1.8.0)
-      unicode-display_width (~> 1.1, >= 1.1.1)
-    thread_safe (0.3.6)
-    typhoeus (0.8.0)
-      ethon (>= 0.8.0)
-    tzinfo (1.2.3)
-      thread_safe (~> 0.1)
     uglifier (3.2.0)
       execjs (>= 0.3.0, < 3)
     unicode-display_width (1.3.0)
@@ -227,7 +81,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  github-pages
+  jekyll (= 3.5.0)
   jekyll-assets
   jekyll-pants
   jekyll-seo-tag
diff --git a/_config.yml b/_config.yml
index 7514ac8..0f43f71 100644
--- a/_config.yml
+++ b/_config.yml
@@ -30,7 +30,7 @@ update:
     document: common-flow.md
     diagram: common-flow.svg
 
-gems:
+plugins:
   - jekyll-assets
   - jekyll-pants
   - jekyll-sitemap