diff --git a/Gemfile b/Gemfile
index fb9b6c84995..894831b10f8 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,6 +10,13 @@ def location_for(place)
   end
 end
 
+# The YARD dependencies are only needed when developing the documentation, not
+# when testing or deploying.
+group :development do
+  gem "yard"
+  gem "redcarpet"
+end
+
 group(:development, :test) do
   gem "puppet", *location_for('file://.')
   gem "facter", *location_for(ENV['FACTER_LOCATION'] || '~> 1.6')