diff --git a/Gemfile b/Gemfile
index f01211b..98e761c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -31,3 +31,5 @@ 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 "webrick", "~> 1.8"
diff --git a/_config.yml b/_config.yml
index e06e8b6..c9cb4dc 100644
--- a/_config.yml
+++ b/_config.yml
@@ -62,7 +62,7 @@ linkedin:          natashamattson
 #hackernews:        username
 
 # Gems
-plugins:
+gems:
     - jekyll-mentions
     - jekyll-feed
     - jekyll-sitemap