diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 0697101..59d1e22 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby-version: ['3.1.4']
+        ruby-version: ['3.2.4']
     steps:
     - uses: actions/checkout@v2
     - name: Set up Ruby
@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby-version: ['3.1.4']
+        ruby-version: ['3.2.4']
     steps:
     - uses: actions/checkout@v2
     - name: Set up Ruby
@@ -40,7 +40,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby-version: ['3.1.4', '3.2.2']
+        ruby-version: ['3.3.3', '3.2.4']
     steps:
     - uses: actions/checkout@v3
     - name: Set up Ruby
diff --git a/.rubocop.yml b/.rubocop.yml
index ea6c975..5ea029a 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -4,7 +4,7 @@ require:
   - rubocop-rspec
 
 AllCops:
-  TargetRubyVersion: 3.1
+  TargetRubyVersion: 3.2
   NewCops: enable
 Naming/RescuedExceptionsVariableName:
   Enabled: false
diff --git a/.tool-versions b/.tool-versions
index 306ab33..5f66004 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1 +1 @@
-ruby 3.1.4
+ruby 3.2.4
diff --git a/Gemfile.lock b/Gemfile.lock
index 8d1e043..56b950b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -58,11 +58,11 @@ GEM
       kramdown (~> 2.0)
     kwalify (0.7.2)
     language_server-protocol (3.17.0.3)
+    mini_portile2 (2.8.6)
     minitest (5.20.0)
     mutex_m (0.2.0)
-    nokogiri (1.15.5-arm64-darwin)
-      racc (~> 1.4)
-    nokogiri (1.15.5-x86_64-linux)
+    nokogiri (1.15.5)
+      mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
     overcommit (0.60.0)
       childprocess (>= 0.6.3, < 5)
@@ -165,6 +165,7 @@ GEM
 
 PLATFORMS
   arm64-darwin-22
+  arm64-darwin-23
   x86_64-linux
 
 DEPENDENCIES
diff --git a/anthropic-rb.gemspec b/anthropic-rb.gemspec
index 8a2d395..1278720 100644
--- a/anthropic-rb.gemspec
+++ b/anthropic-rb.gemspec
@@ -36,7 +36,7 @@ Gem::Specification.new do |spec|
   # guide at: https://bundler.io/guides/creating_gem.html
   spec.metadata['rubygems_mfa_required'] = 'true'
 
-  spec.required_ruby_version = '>= 3.1'
+  spec.required_ruby_version = '>= 3.2.4'
   spec.add_dependency 'httpx', '>= 1.1.5'
   spec.add_dependency 'json-schema', '>= 4.1.1'
 end