diff --git a/jekyll-slim.gemspec b/jekyll-slim.gemspec
index 27eca40..2e4750b 100644
--- a/jekyll-slim.gemspec
+++ b/jekyll-slim.gemspec
@@ -17,7 +17,7 @@ Gem::Specification.new do |gem|
   gem.test_files    = gem.files.grep(%r{^(test|spec|features)/})
   gem.require_paths = ['lib']
 
-  gem.add_runtime_dependency 'jekyll', '~> 2.4'
+  gem.add_runtime_dependency 'jekyll', '~> 3.1'
   gem.add_runtime_dependency 'slim'
 
   gem.add_development_dependency('rake')