diff --git a/ruby/Gemfile b/ruby/Gemfile
index 978fb1ff..a9a3c64e 100644
--- a/ruby/Gemfile
+++ b/ruby/Gemfile
@@ -5,7 +5,7 @@ source "https://rubygems.org"
 # Specify your gem's dependencies in collatz.gemspec
 gemspec
 
-gem "rake", "~> 13.3"
+gem "rake", "~> 13.4"
 
 gem "rdoc", "~> 7.1"
 
diff --git a/ruby/Gemfile.lock b/ruby/Gemfile.lock
index f6bba270..ebe53a50 100644
--- a/ruby/Gemfile.lock
+++ b/ruby/Gemfile.lock
@@ -25,7 +25,7 @@ GEM
       stringio
     racc (1.8.1)
     rainbow (3.1.1)
-    rake (13.3.1)
+    rake (13.4.2)
     rdoc (7.1.0)
       erb
       psych (>= 4.0.0)
@@ -71,7 +71,7 @@ PLATFORMS
 
 DEPENDENCIES
   collatz!
-  rake (~> 13.3)
+  rake (~> 13.4)
   rdoc (~> 7.1)
   rspec (~> 3.13)
   rubocop (~> 1.75)