diff --git a/Gemfile.lock b/Gemfile.lock
index 79bf801..4810b96 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,7 +11,7 @@ GEM
     mini_portile2 (2.4.0)
     nokogiri (1.10.7)
       mini_portile2 (~> 2.4.0)
-    rake (10.5.0)
+    rake (13.0.1)
     rspec (3.7.0)
       rspec-core (~> 3.7.0)
       rspec-expectations (~> 3.7.0)
@@ -32,7 +32,7 @@ PLATFORMS
 DEPENDENCIES
   bundler (~> 1.16)
   hocr_turtletext!
-  rake (~> 10.0)
+  rake (~> 13.0)
   rspec (~> 3.0)
 
 BUNDLED WITH
diff --git a/hocr_turtletext.gemspec b/hocr_turtletext.gemspec
index 342944b..2ab6c7e 100644
--- a/hocr_turtletext.gemspec
+++ b/hocr_turtletext.gemspec
@@ -36,7 +36,7 @@ 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_runtime_dependency 'nokogiri', '~> 1.10', '>= 1.10.7'