Update.

Gemfile

@@ -31,5 +31,3 @@ gem "wdm", "~> 0.1.1", :platforms => [:mingw, :x64_mingw, :mswin]
 # Lock `http_parser.rb` gem to `v0.6.x` on JRuby builds since newer versions of the gem
 # do not have a Java counterpart.
 gem "http_parser.rb", "~> 0.6.0", :platforms => [:jruby]
-
-gem "minimal-mistakes-jekyll"

_config.yml

@@ -28,9 +28,9 @@ twitter_username: jekyllrb
 github_username:  jekyll
 
 # Build settings
-theme: minimal-mistakes-jekyll
+remote_theme: pages-themes/[email protected]
 plugins:
-  - jekyll-feed
+- jekyll-remote-theme # add this line to the plugins list if you already have one
 
 # Exclude from processing.
 # The following items will not be processed, by default.