diff --git a/Gemfile b/Gemfile
index 774375508..8410d2e5c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -6,6 +6,7 @@ gem 'rack-jekyll'
 gem 'rake'
 gem 'jekyll-redirect-from'
 gem 'html-proofer'
+gem 'kramdown-parser-gfm'
 
 # group :jekyll_plugins do
 #   gem 'hawkins'
diff --git a/Gemfile.lock b/Gemfile.lock
index 32440bb7e..d4435779d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -10,7 +10,7 @@ GEM
       public_suffix (>= 2.0.2, < 5.0)
     colorator (1.1.0)
     colorize (0.8.1)
-    concurrent-ruby (1.1.6)
+    concurrent-ruby (1.1.7)
     em-websocket (0.5.1)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
@@ -31,14 +31,14 @@ GEM
     http_parser.rb (0.6.0)
     i18n (0.9.5)
       concurrent-ruby (~> 1.0)
-    jekyll (3.8.7)
+    jekyll (3.9.0)
       addressable (~> 2.4)
       colorator (~> 1.0)
       em-websocket (~> 0.5)
       i18n (~> 0.7)
       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)
@@ -50,7 +50,10 @@ GEM
       sass (~> 3.4)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
-    kramdown (1.17.0)
+    kramdown (2.3.0)
+      rexml
+    kramdown-parser-gfm (1.1.0)
+      kramdown (~> 2.0)
     liquid (4.0.3)
     listen (3.2.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
@@ -73,7 +76,8 @@ GEM
     rb-fsevent (0.10.4)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rouge (3.20.0)
+    rexml (3.2.4)
+    rouge (3.22.0)
     safe_yaml (1.0.5)
     sass (3.7.4)
       sass-listen (~> 4.0.0)
@@ -95,5 +99,9 @@ DEPENDENCIES
   jekyll
   jekyll-redirect-from
   kramdown
+  kramdown-parser-gfm
   rack-jekyll
   rake
+
+BUNDLED WITH
+   2.1.4