diff --git a/Gemfile.lock b/Gemfile.lock
index 3c0355b..b9aacb8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -75,7 +75,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     public_suffix (3.0.2)
-    rake (10.5.0)
+    rake (13.0.1)
     shoulda (3.6.0)
       shoulda-context (~> 1.0, >= 1.0.1)
       shoulda-matchers (~> 3.0)
@@ -105,7 +105,7 @@ PLATFORMS
 
 DEPENDENCIES
   bundler (~> 1.16)
-  rake (~> 10.0)
+  rake (~> 13.0)
   spreadtheword!
 
 BUNDLED WITH
diff --git a/spreadtheword.gemspec b/spreadtheword.gemspec
index 570733a..12e68d7 100644
--- a/spreadtheword.gemspec
+++ b/spreadtheword.gemspec
@@ -29,5 +29,5 @@ Gem::Specification.new do |spec|
   spec.add_dependency 'nokogiri', '~> 1.8'
   spec.add_dependency 'pry', '~> 0.11.3'
   spec.add_development_dependency "bundler", "~> 1.16"
-  spec.add_development_dependency "rake", "~> 10.0"
+  spec.add_development_dependency "rake", "~> 13.0"
 end