diff --git a/google-cloud-bigtable/Gemfile b/google-cloud-bigtable/Gemfile
index 395febb9f59a..c9fb1b591d43 100644
--- a/google-cloud-bigtable/Gemfile
+++ b/google-cloud-bigtable/Gemfile
@@ -24,13 +24,16 @@ local_dependencies.each do |name|
   gem name, path: "../#{name}"
 end
 
-gem "google-style", "~> 1.30.1"
-gem "minitest", "~> 5.16"
-gem "minitest-focus", "~> 1.1"
+gem "google-style", "~> 1.32.0"
+gem "irb", "~> 1.17"
+gem "minitest", "~> 6.0.2"
+gem "minitest-focus", "~> 1.4"
+gem "minitest-mock", "~> 5.27"
 gem "minitest-reporters", "~> 1.5.0", require: false
-gem "minitest-rg", "~> 5.2"
+gem "minitest-rg", "~> 5.3"
+gem "ostruct", "~> 0.5.5"
 gem "rake"
-gem "redcarpet", "~> 3.0"
-gem "simplecov", "~> 0.9"
+gem "redcarpet", "~> 3.6"
+gem "simplecov", "~> 0.22"
 gem "yard", "~> 0.9"
 gem "yard-doctest", "~> 0.1.13"
diff --git a/google-cloud-bigtable/README.md b/google-cloud-bigtable/README.md
index 14243293a3b5..777c4e70df01 100644
--- a/google-cloud-bigtable/README.md
+++ b/google-cloud-bigtable/README.md
@@ -81,7 +81,7 @@ results in logs appearing alongside your application logs in the
 
 ## Supported Ruby Versions
 
-This library is supported on Ruby 3.0+.
+This library is supported on Ruby 3.2+.
 
 Google provides official support for Ruby versions that are actively supported
 by Ruby Core—that is, Ruby versions that are either in normal maintenance or
diff --git a/google-cloud-bigtable/google-cloud-bigtable.gemspec b/google-cloud-bigtable/google-cloud-bigtable.gemspec
index a7e79c31db54..4f3bf8074a49 100644
--- a/google-cloud-bigtable/google-cloud-bigtable.gemspec
+++ b/google-cloud-bigtable/google-cloud-bigtable.gemspec
@@ -21,7 +21,7 @@ Gem::Specification.new do |gem|
                        "TROUBLESHOOTING.md", "CHANGELOG.md", "CODE_OF_CONDUCT.md", "LICENSE", ".yardopts"]
   gem.require_paths = ["lib"]
 
-  gem.required_ruby_version = ">= 3.0"
+  gem.required_ruby_version = ">= 3.2"
 
   gem.add_dependency "concurrent-ruby", "~> 1.0"
   gem.add_dependency "google-cloud-bigtable-admin-v2", "~> 1.7"
diff --git a/google-cloud-datastore/Gemfile b/google-cloud-datastore/Gemfile
index 017c92f69809..ce3ef8adb900 100644
--- a/google-cloud-datastore/Gemfile
+++ b/google-cloud-datastore/Gemfile
@@ -20,14 +20,17 @@ local_dependencies.each do |name|
 end
 
 gem "autotest-suffix", "~> 1.1"
-gem "google-style", "~> 1.30.1"
-gem "minitest", "~> 5.16"
+gem "google-style", "~> 1.32.0"
+gem "irb", "~> 1.17"
+gem "minitest", "~> 6.0.2"
 gem "minitest-autotest", "~> 1.0"
-gem "minitest-focus", "~> 1.1"
+gem "minitest-focus", "~> 1.4"
 gem "minitest-hooks", "~> 1.5"
-gem "minitest-rg", "~> 5.2"
+gem "minitest-mock", "~> 5.27"
+gem "minitest-rg", "~> 5.3"
+gem "ostruct", "~> 0.5.5"
 gem "rake"
-gem "redcarpet", "~> 3.0"
-gem "simplecov", "~> 0.9"
+gem "redcarpet", "~> 3.6"
+gem "simplecov", "~> 0.22"
 gem "yard", "~> 0.9"
 gem "yard-doctest", "~> 0.1.13"
diff --git a/google-cloud-datastore/README.md b/google-cloud-datastore/README.md
index fec6d89e88b7..1ff4881ff691 100644
--- a/google-cloud-datastore/README.md
+++ b/google-cloud-datastore/README.md
@@ -76,7 +76,7 @@ end
 
 ## Supported Ruby Versions
 
-This library is supported on Ruby 3.0+.
+This library is supported on Ruby 3.2+.
 
 Google provides official support for Ruby versions that are actively supported
 by Ruby Core—that is, Ruby versions that are either in normal maintenance or
diff --git a/google-cloud-datastore/google-cloud-datastore.gemspec b/google-cloud-datastore/google-cloud-datastore.gemspec
index 725a0493ffd4..e5e5d7715533 100644
--- a/google-cloud-datastore/google-cloud-datastore.gemspec
+++ b/google-cloud-datastore/google-cloud-datastore.gemspec
@@ -16,7 +16,7 @@ Gem::Specification.new do |gem|
                       ["OVERVIEW.md", "AUTHENTICATION.md", "EMULATOR.md", "LOGGING.md", "CONTRIBUTING.md", "TROUBLESHOOTING.md", "CHANGELOG.md", "CODE_OF_CONDUCT.md", "LICENSE", ".yardopts"]
   gem.require_paths = ["lib"]
 
-  gem.required_ruby_version = ">= 3.0"
+  gem.required_ruby_version = ">= 3.2"
 
   gem.add_dependency "google-cloud-core", "~> 1.5"
   gem.add_dependency "google-cloud-datastore-v1", ">= 0.0", "< 2.a"
diff --git a/google-cloud-firestore/Gemfile b/google-cloud-firestore/Gemfile
index 11a0941cc581..10830ab731be 100644
--- a/google-cloud-firestore/Gemfile
+++ b/google-cloud-firestore/Gemfile
@@ -20,13 +20,16 @@ local_dependencies.each do |name|
 end
 
 gem "autotest-suffix", "~> 1.1"
-gem "google-style", "~> 1.30.1"
-gem "minitest", "~> 5.25"
+gem "google-style", "~> 1.32.0"
+gem "irb", "~> 1.17"
+gem "minitest", "~> 6.0.2"
 gem "minitest-autotest", "~> 1.0"
 gem "minitest-focus", "~> 1.4"
+gem "minitest-mock", "~> 5.27"
 gem "minitest-rg", "~> 5.3"
+gem "ostruct", "~> 0.5.5"
 gem "rake"
-gem "redcarpet", "~> 3.0"
+gem "redcarpet", "~> 3.6"
 gem "simplecov", "~> 0.22"
 gem "stackprof" unless Gem.win_platform?
 gem "yard", "~> 0.9"
diff --git a/google-cloud-firestore/README.md b/google-cloud-firestore/README.md
index b899f8449540..719d019e3877 100644
--- a/google-cloud-firestore/README.md
+++ b/google-cloud-firestore/README.md
@@ -78,7 +78,7 @@ end
 
 ## Supported Ruby Versions
 
-This library is supported on Ruby 3.0+.
+This library is supported on Ruby 3.2+.
 
 Google provides official support for Ruby versions that are actively supported
 by Ruby Core—that is, Ruby versions that are either in normal maintenance or
diff --git a/google-cloud-firestore/google-cloud-firestore.gemspec b/google-cloud-firestore/google-cloud-firestore.gemspec
index f8a0e119cae1..e6fadfa493a7 100644
--- a/google-cloud-firestore/google-cloud-firestore.gemspec
+++ b/google-cloud-firestore/google-cloud-firestore.gemspec
@@ -17,7 +17,7 @@ Gem::Specification.new do |gem|
                       ["OVERVIEW.md", "AUTHENTICATION.md", "EMULATOR.md", "LOGGING.md", "CONTRIBUTING.md", "TROUBLESHOOTING.md", "CHANGELOG.md", "CODE_OF_CONDUCT.md", "LICENSE", ".yardopts"]
   gem.require_paths = ["lib"]
 
-  gem.required_ruby_version = ">= 3.0"
+  gem.required_ruby_version = ">= 3.2"
 
   gem.add_dependency "bigdecimal", "~> 3.0"
   gem.add_dependency "concurrent-ruby", "~> 1.0"