diff --git a/_config.yml b/_config.yml
index f62e5d0483433..dad6b74edf3da 100644
--- a/_config.yml
+++ b/_config.yml
@@ -53,13 +53,21 @@ baseurl: ""
 # !! You don't need to change any of the configuration flags below !!
 #
 
-markdown: redcarpet
-highlighter: pygments
 permalink: /:title/
 
 # The release of Jekyll Now that you're using
 version: v1.1.0
 
+# Jekyll 3 now only supports Kramdown for Markdown
+kramdown:
+  # Use GitHub flavored markdown, including triple backtick fenced code blocks
+  input: GFM
+  # Jekyll 3 and GitHub Pages now only support rouge for syntax highlighting
+  syntax_highlighter: rouge
+  syntax_highlighter_opts:
+    # Use existing pygments syntax highlighting css
+    css_class: 'highlight'
+
 # Set the Sass partials directory, as we're using @imports
 sass:
   style: :expanded # You might prefer to minify using :compressed