handlebars_assets.gemspec in handlebars_assets-0.20.1 vs handlebars_assets.gemspec in handlebars_assets-0.20.2

@@ -20,10 +20,10 @@
   s.require_paths = ["lib"]
 
   s.add_runtime_dependency "execjs", "~> 2.0"
   s.add_runtime_dependency "tilt", "~> 1.2"
   s.add_runtime_dependency "multi_json", "~> 1.0"
-  s.add_runtime_dependency "sprockets", "~> 2.0"
+  s.add_runtime_dependency "sprockets", ">= 2.0.0", "< 4.0"
 
   s.add_development_dependency "minitest", '~> 5.5'
   s.add_development_dependency "haml", '~> 4.0'
   s.add_development_dependency "rake", '~> 10.0'
   s.add_development_dependency "slim", '~> 3.0'