diff --git a/Gemfile.lock b/Gemfile.lock
index 36ec9c7..f58fbec 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -12,7 +12,7 @@ GEM
     diff-lcs (1.3)
     docile (1.3.1)
     json (2.1.0)
-    rake (10.5.0)
+    rake (13.0.6)
     rspec (3.8.0)
       rspec-core (~> 3.8.0)
       rspec-expectations (~> 3.8.0)
@@ -39,7 +39,7 @@ PLATFORMS
 DEPENDENCIES
   bundler (~> 1.16)
   du_pretty!
-  rake (~> 10.0)
+  rake (~> 13.0)
   rspec (~> 3.0)
   simplecov (~> 0.16.1)
 
diff --git a/du_pretty.gemspec b/du_pretty.gemspec
index 6b2b5a7..d5e8604 100644
--- a/du_pretty.gemspec
+++ b/du_pretty.gemspec
@@ -21,7 +21,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ['lib']
 
   spec.add_development_dependency 'bundler', '~> 1.16'
-  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 'simplecov', '~> 0.16.1'
   spec.add_dependency 'colorize', '~> 0.8.1'