diff --git a/minimal-mistakes-jekyll.gemspec b/minimal-mistakes-jekyll.gemspec
index 44716e38..a4c21466 100644
--- a/minimal-mistakes-jekyll.gemspec
+++ b/minimal-mistakes-jekyll.gemspec
@@ -15,14 +15,13 @@ Gem::Specification.new do |spec|
     f.match(%r{^(assets|_(includes|layouts|sass)/|(LICENSE|README|CHANGELOG)((\.(txt|md|markdown)|$)))}i)
   end
 
-  spec.add_dependency "jekyll", "~> 3.3"
-
-  spec.add_development_dependency "bundler", "~> 1.12"
-  spec.add_development_dependency "rake", "~> 10.0"
-
+  spec.add_runtime_dependency "jekyll", "~> 3.3"
   spec.add_runtime_dependency "jekyll-paginate", "~> 1.1"
   spec.add_runtime_dependency "jekyll-sitemap", "~> 0.12"
   spec.add_runtime_dependency "jekyll-gist", "~> 1.4"
   spec.add_runtime_dependency "jekyll-feed", "~> 0.8"
   spec.add_runtime_dependency "jemoji", "~> 0.7"
+
+  spec.add_development_dependency "bundler", "~> 1.12"
+  spec.add_development_dependency "rake", "~> 10.0"
 end