diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ccdf2f9..22b363f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,18 +10,18 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
-      - uses: ruby/setup-ruby@3ff19f5e2baf30647122352b96108b1fbe250c64
+      - uses: ruby/setup-ruby@9eb537ca036ebaed86729dcb9309076e4c5c3b74
         with:
           bundler-cache: true
       - run: bundle exec rubocop
   test:
     strategy:
       matrix:
-        ruby: [3.2, 3.3, 3.4, 4.0]
+        ruby: [3.3, 3.4, 4.0]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
-      - uses: ruby/setup-ruby@3ff19f5e2baf30647122352b96108b1fbe250c64
+      - uses: ruby/setup-ruby@9eb537ca036ebaed86729dcb9309076e4c5c3b74
         with:
           bundler-cache: true
           ruby-version: ${{ matrix.ruby }}
diff --git a/.rubocop.yml b/.rubocop.yml
index 1cf5fef..4a827cf 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -5,7 +5,7 @@ plugins:
 
 AllCops:
   NewCops: enable
-  TargetRubyVersion: 3.2
+  TargetRubyVersion: 3.3
 Layout/LineLength:
   Max: 120
 Metrics/BlockLength:
diff --git a/.ruby-version b/.ruby-version
index fcdb2e1..7636e75 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-4.0.0
+4.0.5
diff --git a/Gemfile.lock b/Gemfile.lock
index 6449e1d..f25461f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -85,4 +85,4 @@ DEPENDENCIES
   simplecov (~> 0.22)
 
 BUNDLED WITH
-  4.0.3
+  4.0.15
diff --git a/awrence.gemspec b/awrence.gemspec
index d624a2f..cc0c58e 100644
--- a/awrence.gemspec
+++ b/awrence.gemspec
@@ -15,7 +15,7 @@ Gem::Specification.new do |spec|
   spec.license = "MIT"
   spec.metadata["rubygems_mfa_required"] = "true"
   spec.name = "awrence"
-  spec.required_ruby_version = ">= 3.2"
+  spec.required_ruby_version = ">= 3.3"
   spec.summary = "Camelize your snake keys when working with JSON APIs"
   spec.version = Awrence::VERSION
 end