diff --git a/exporter/otlp-grpc/Gemfile b/exporter/otlp-grpc/Gemfile
index 59db446ea..d7634209b 100644
--- a/exporter/otlp-grpc/Gemfile
+++ b/exporter/otlp-grpc/Gemfile
@@ -9,7 +9,7 @@ source 'https://rubygems.org'
 gemspec
 
 group :test, :development do
-  gem 'minitest', '~> 5.27.0'
+  gem 'minitest', '~> 6.0.0'
   gem 'rake', '~> 13.4.0'
   gem 'rubocop', '~> 1.87.0'
   gem 'rubocop-minitest', '~> 0.39.0'
diff --git a/logs_api/Gemfile b/logs_api/Gemfile
index bd32bdd4c..3f07ec80d 100644
--- a/logs_api/Gemfile
+++ b/logs_api/Gemfile
@@ -11,7 +11,7 @@ gemspec
 group :test, :development do
   gem 'benchmark-ips', '~> 2.15.0'
   gem 'logger', '~> 1.7.0' # should move to appraisals
-  gem 'minitest', '~> 5.27.0'
+  gem 'minitest', '~> 6.0.0'
   gem 'rake', '~> 13.4.0'
   gem 'rubocop', '~> 1.87.0'
   gem 'rubocop-minitest', '~> 0.39.0'
diff --git a/metrics_api/Gemfile b/metrics_api/Gemfile
index 1b16ad6ff..7c7148761 100644
--- a/metrics_api/Gemfile
+++ b/metrics_api/Gemfile
@@ -10,7 +10,7 @@ gemspec
 
 group :test, :development do
   gem 'benchmark-ips', '~> 2.15.0'
-  gem 'minitest', '~> 5.27.0'
+  gem 'minitest', '~> 6.0.0'
   gem 'rake', '~> 13.4.0'
   gem 'rubocop', '~> 1.87.0'
   gem 'rubocop-minitest', '~> 0.39.0'
diff --git a/propagator/b3/Gemfile b/propagator/b3/Gemfile
index 4b7d8c4f7..40faefd9f 100644
--- a/propagator/b3/Gemfile
+++ b/propagator/b3/Gemfile
@@ -9,7 +9,7 @@ source 'https://rubygems.org'
 gemspec
 
 group :test, :development do
-  gem 'minitest', '~> 5.27.0'
+  gem 'minitest', '~> 6.0.0'
   gem 'rake', '~> 13.4.0'
   gem 'rubocop', '~> 1.87.0'
   gem 'rubocop-minitest', '~> 0.39.0'
diff --git a/propagator/jaeger/Gemfile b/propagator/jaeger/Gemfile
index bedcf5a62..a480b1183 100644
--- a/propagator/jaeger/Gemfile
+++ b/propagator/jaeger/Gemfile
@@ -9,7 +9,7 @@ source 'https://rubygems.org'
 gemspec
 
 group :test, :development do
-  gem 'minitest', '~> 5.27.0'
+  gem 'minitest', '~> 6.0.0'
   gem 'rake', '~> 13.4.0'
   gem 'rubocop', '~> 1.87.0'
   gem 'rubocop-minitest', '~> 0.39.0'
diff --git a/registry/Gemfile b/registry/Gemfile
index 867b27f34..153b0ce52 100644
--- a/registry/Gemfile
+++ b/registry/Gemfile
@@ -10,7 +10,7 @@ gemspec
 
 group :test, :development do
   gem 'appraisal', '~> 2.5.0'
-  gem 'minitest', '~> 5.27.0'
+  gem 'minitest', '~> 6.0.0'
   gem 'rake', '~> 13.4.0'
   gem 'rspec-mocks', '~> 3.13.7'
   gem 'rubocop', '~> 1.87.0'
diff --git a/sdk_experimental/Gemfile b/sdk_experimental/Gemfile
index 3762c8972..495361858 100644
--- a/sdk_experimental/Gemfile
+++ b/sdk_experimental/Gemfile
@@ -9,7 +9,7 @@ source 'https://rubygems.org'
 gemspec
 
 group :test, :development do
-  gem 'minitest', '~> 5.27.0'
+  gem 'minitest', '~> 6.0.0'
   gem 'rake', '~> 13.4.0'
   gem 'rubocop', '~> 1.87.0'
   gem 'rubocop-minitest', '~> 0.39.0'
diff --git a/semantic_conventions/Gemfile b/semantic_conventions/Gemfile
index 4f287bb51..6a6153a93 100644
--- a/semantic_conventions/Gemfile
+++ b/semantic_conventions/Gemfile
@@ -9,7 +9,7 @@ source 'https://rubygems.org'
 gemspec
 
 group :development, :test do
-  gem 'minitest', '~> 5.27.0'
+  gem 'minitest', '~> 6.0.0'
   gem 'mutex_m' if RUBY_VERSION >= '3.4'
   gem 'rake', '~> 13.4.0'
   gem 'rubocop', '~> 1.87.0'
diff --git a/test_helpers/Gemfile b/test_helpers/Gemfile
index dce45a157..2f1150e91 100644
--- a/test_helpers/Gemfile
+++ b/test_helpers/Gemfile
@@ -9,7 +9,7 @@ source 'https://rubygems.org'
 gemspec
 
 group :test, :development do
-  gem 'minitest', '~> 5.27.0'
+  gem 'minitest', '~> 6.0.0'
   gem 'rake', '~> 13.4.0'
   gem 'rubocop', '~> 1.87.0'
   gem 'rubocop-minitest', '~> 0.39.0'