diff --git a/Gemfile.lock b/Gemfile.lock
index e4196f6..dfa8d71 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -12,7 +12,7 @@ GEM
     diff-lcs (1.3)
     docile (1.3.1)
     json (2.2.0)
-    rake (10.5.0)
+    rake (13.0.3)
     rspec (3.8.0)
       rspec-core (~> 3.8.0)
       rspec-expectations (~> 3.8.0)
@@ -39,7 +39,7 @@ DEPENDENCIES
   awesome_print
   bundler (~> 1.15.4)
   contract_value_object!
-  rake (~> 10.0)
+  rake (~> 13.0)
   rspec (~> 3.0)
   simplecov
 
diff --git a/contract_value_object.gemspec b/contract_value_object.gemspec
index a9eee42..780e269 100644
--- a/contract_value_object.gemspec
+++ b/contract_value_object.gemspec
@@ -22,7 +22,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency 'contracts'
 
   spec.add_development_dependency 'bundler', '~> 1.15.4'
-  spec.add_development_dependency 'rake', '~> 10.0'
+  spec.add_development_dependency 'rake', '~> 13.0'
   spec.add_development_dependency 'rspec', '~> 3.0'
   spec.add_development_dependency 'awesome_print'
   spec.add_development_dependency 'simplecov'