diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e061a69..bffda0c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,7 +20,7 @@ jobs:
     if: github.event_name == 'push' || github.event.pull_request.head.repo.fork
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
@@ -36,7 +36,7 @@ jobs:
     runs-on: ${{ github.repository == 'stainless-sdks/moderation-api-ruby' && 'depot-ubuntu-24.04' || 'ubuntu-latest' }}
     if: github.event_name == 'push' || github.event.pull_request.head.repo.fork
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
diff --git a/.github/workflows/publish-gem.yml b/.github/workflows/publish-gem.yml
index 7114c2b..ff8587a 100644
--- a/.github/workflows/publish-gem.yml
+++ b/.github/workflows/publish-gem.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
diff --git a/.github/workflows/release-doctor.yml b/.github/workflows/release-doctor.yml
index 405cac7..9647c9e 100644
--- a/.github/workflows/release-doctor.yml
+++ b/.github/workflows/release-doctor.yml
@@ -12,7 +12,7 @@ jobs:
     if: github.repository == 'moderation-api/sdk-ruby' && (github.event_name == 'push' || github.event_name == 'workflow_dispatch' || startsWith(github.head_ref, 'release-please') || github.head_ref == 'next')
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Check release environment
         run: |
diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 75ec52f..2d96c4d 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "2.3.0"
+  ".": "2.3.1"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index cd0ffe6..6a31170 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,14 @@
 # Changelog
 
+## 2.3.1 (2026-01-17)
+
+Full Changelog: [v2.3.0...v2.3.1](https://github.com/moderation-api/sdk-ruby/compare/v2.3.0...v2.3.1)
+
+### Chores
+
+* **internal:** update `actions/checkout` version ([6debb55](https://github.com/moderation-api/sdk-ruby/commit/6debb5528f54ceaefc72ffa445a69aa4f30bc4e7))
+* move `cgi` into dependencies for ruby 4 ([6aab585](https://github.com/moderation-api/sdk-ruby/commit/6aab585a91f2ac47f2bae66f1e21d03eb6b5b475))
+
 ## 2.3.0 (2026-01-02)
 
 Full Changelog: [v2.2.1...v2.3.0](https://github.com/moderation-api/sdk-ruby/compare/v2.2.1...v2.3.0)
diff --git a/Gemfile.lock b/Gemfile.lock
index 13990dc..833dbd5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,7 +11,8 @@ GIT
 PATH
   remote: .
   specs:
-    moderation_api (2.3.0)
+    moderation_api (2.3.1)
+      cgi
       connection_pool
 
 GEM
@@ -42,6 +43,7 @@ GEM
     base64 (0.3.0)
     benchmark (0.5.0)
     bigdecimal (3.3.1)
+    cgi (0.5.1)
     concurrent-ruby (1.3.5)
     connection_pool (2.5.4)
     console (1.34.2)
diff --git a/README.md b/README.md
index 497038b..80e9224 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ To use this gem, install via Bundler by adding the following to your application
 <!-- x-release-please-start-version -->
 
 ```ruby
-gem "moderation_api", "~> 2.3.0"
+gem "moderation_api", "~> 2.3.1"
 ```
 
 <!-- x-release-please-end -->
diff --git a/lib/moderation_api/version.rb b/lib/moderation_api/version.rb
index 5f30aec..4c87408 100644
--- a/lib/moderation_api/version.rb
+++ b/lib/moderation_api/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module ModerationAPI
-  VERSION = "2.3.0"
+  VERSION = "2.3.1"
 end
diff --git a/moderation_api.gemspec b/moderation_api.gemspec
index 1a933e6..7def28f 100644
--- a/moderation_api.gemspec
+++ b/moderation_api.gemspec
@@ -24,5 +24,6 @@ Gem::Specification.new do |s|
     ".ignore"
   ]
   s.extra_rdoc_files = ["README.md"]
+  s.add_dependency "cgi"
   s.add_dependency "connection_pool"
 end