fillable-pdf.gemspec in fillable-pdf-0.5 vs fillable-pdf.gemspec in fillable-pdf-0.6

@@ -1,7 +1,5 @@
-# coding: utf-8
-
 lib = File.expand_path('../lib', __FILE__)
 $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 require 'fillable-pdf/version'
 
 Gem::Specification.new do |spec|
@@ -18,7 +16,8 @@
   spec.files         = `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   spec.bindir        = 'exe'
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = %w[ext lib]
 
+  spec.requirements << '>= JDK 5.0'
   spec.add_runtime_dependency 'rjb', '~> 1.5'
 end