diff --git a/Gemfile.lock b/Gemfile.lock
index 5a95412..ed66a0d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,7 +7,7 @@ GEM
   remote: https://rubygems.org/
   specs:
     diff-lcs (1.3)
-    rake (10.5.0)
+    rake (13.0.3)
     rspec (3.7.0)
       rspec-core (~> 3.7.0)
       rspec-expectations (~> 3.7.0)
@@ -28,7 +28,7 @@ PLATFORMS
 DEPENDENCIES
   bundler (~> 1.16)
   inside_docker!
-  rake (~> 10.0)
+  rake (~> 13.0)
   rspec (~> 3.0)
 
 BUNDLED WITH
diff --git a/inside_docker.gemspec b/inside_docker.gemspec
index 7703166..14c3914 100644
--- a/inside_docker.gemspec
+++ b/inside_docker.gemspec
@@ -22,6 +22,6 @@ 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"
 end