diff --git a/rack-toolbar.gemspec b/rack-toolbar.gemspec
index cad8a51..a8ed65d 100644
--- a/rack-toolbar.gemspec
+++ b/rack-toolbar.gemspec
@@ -19,7 +19,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
 
   spec.add_development_dependency "bundler", "~> 1.9"
-  spec.add_development_dependency "rake", "~> 12.3"
+  spec.add_development_dependency "rake", "~> 13.0"
   spec.add_development_dependency "rspec", "~> 3.2"
   spec.add_development_dependency "rack-test", "~> 0.6"
   spec.add_development_dependency "pry", "~> 0.10"