diff --git a/jekyll.gemspec b/jekyll.gemspec
index 8fd62e81..5ae9277f 100644
--- a/jekyll.gemspec
+++ b/jekyll.gemspec
@@ -8,7 +8,7 @@ Gem::Specification.new do |s|
   s.specification_version = 2 if s.respond_to? :specification_version=
   s.required_rubygems_version = Gem::Requirement.new(">= 0") if s.respond_to? :required_rubygems_version=
   s.rubygems_version = "2.2.2"
-  s.required_ruby_version = ">= 2.0.0"
+  s.required_ruby_version = ">= 2.1.0"
 
   s.name          = "jekyll"
   s.version       = Jekyll::VERSION