diff --git a/Gemfile.lock b/Gemfile.lock
index 2c1add8..d75ffba 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,7 +9,7 @@ GEM
   specs:
     diff-lcs (1.5.1)
     racc (1.8.0)
-    rake (13.2.1)
+    rake (13.3.1)
     rspec (3.13.0)
       rspec-core (~> 3.13.0)
       rspec-expectations (~> 3.13.0)
@@ -39,7 +39,7 @@ PLATFORMS
 DEPENDENCIES
   bato!
   bundler (~> 2.2.19)
-  rake (~> 13.2.1)
+  rake (~> 13.3.1)
   rspec (~> 3.13.0)
 
 BUNDLED WITH
diff --git a/bato.gemspec b/bato.gemspec
index c713672..46951a4 100644
--- a/bato.gemspec
+++ b/bato.gemspec
@@ -22,6 +22,6 @@ Gem::Specification.new do |spec|
   spec.add_dependency 'ruby2ruby', '>= 2.4.4', '< 2.6.0'
 
   spec.add_development_dependency 'bundler', '~> 2.2.19'
-  spec.add_development_dependency 'rake', '~> 13.2.1'
+  spec.add_development_dependency 'rake', '~> 13.3.1'
   spec.add_development_dependency 'rspec', '~> 3.13.0'
 end