diff --git a/graphql-docs.gemspec b/graphql-docs.gemspec
index b48f888..6acadc3 100644
--- a/graphql-docs.gemspec
+++ b/graphql-docs.gemspec
@@ -43,7 +43,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency 'extended-markdown-filter', '~> 0.4'
   spec.add_dependency 'gemoji', '~> 3.0'
   spec.add_dependency 'html-pipeline', '>= 2.14.3', '~> 2.14'
-  spec.add_dependency 'dartsass', '~> 1.49'
+  spec.add_dependency 'sass-embedded', '~> 1.58'
 
   spec.add_development_dependency 'html-proofer', '~> 3.4'
   spec.add_development_dependency 'minitest', '~> 5.0'
diff --git a/lib/graphql-docs/generator.rb b/lib/graphql-docs/generator.rb
index 27c922b..c7b6aa7 100644
--- a/lib/graphql-docs/generator.rb
+++ b/lib/graphql-docs/generator.rb
@@ -2,6 +2,7 @@
 
 require 'erb'
 require 'fileutils'
+require 'sass-embedded'
 require 'ostruct'
 
 module GraphQLDocs
@@ -85,8 +86,8 @@ def generate
         assets_dir = File.join(File.dirname(__FILE__), 'layouts', 'assets')
         FileUtils.mkdir_p(File.join(@options[:output_dir], 'assets'))
 
-        sass = File.join(assets_dir, 'css', 'screen.scss')
-        system `dartsass --no-source-map=none #{sass} #{@options[:output_dir]}/assets/style.css`
+        css = Sass.compile(File.join(assets_dir, 'css', 'screen.scss')).css
+        File.write(File.join(@options[:output_dir], 'assets', 'style.css'), css)
 
         FileUtils.cp_r(File.join(assets_dir, 'images'), File.join(@options[:output_dir], 'assets'))
         FileUtils.cp_r(File.join(assets_dir, 'webfonts'), File.join(@options[:output_dir], 'assets'))