diff --git a/Gemfile.lock b/Gemfile.lock
index 80d5ad9..cc4a306 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,7 +7,9 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    minitest (5.27.0)
+    minitest (6.0.0)
+      prism (~> 1.5)
+    prism (1.7.0)
     rake (13.3.1)
     rake-compiler (1.3.1)
       rake
@@ -20,7 +22,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  minitest (~> 5.21)
+  minitest (~> 6.0)
   rake (~> 13.0)
   rake-compiler (~> 1.3)
   ruby_native_statistics!
diff --git a/ruby_native_statistics.gemspec b/ruby_native_statistics.gemspec
index bcf7814..57c8268 100644
--- a/ruby_native_statistics.gemspec
+++ b/ruby_native_statistics.gemspec
@@ -37,7 +37,7 @@ Gem::Specification.new do |spec|
 
   spec.add_development_dependency 'rake-compiler', '~> 1.3'
   spec.add_development_dependency "rake", "~> 13.0"
-  spec.add_development_dependency 'minitest', '~> 5.21'
+  spec.add_development_dependency 'minitest', '~> 6.0'
 
   spec.version = RubyNativeStatistics::VERSION
 end