diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 30bae1a..2ae0358 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -18,6 +18,7 @@ jobs:
           - "3.0"
           - "3.1"
           - "3.2"
+          - "3.3"
     steps:
       - uses: actions/checkout@v4
       - uses: ruby/setup-ruby@v1
diff --git a/.github/workflows/gem-push.yaml b/.github/workflows/gem-push.yaml
index 5c8d227..5841769 100644
--- a/.github/workflows/gem-push.yaml
+++ b/.github/workflows/gem-push.yaml
@@ -13,10 +13,10 @@ jobs:
 
     steps:
     - uses: actions/checkout@v3
-    - name: Set up Ruby 3.1
+    - name: Set up Ruby 3.3
       uses: ruby/setup-ruby@v1
       with:
-        ruby-version: 3.1
+        ruby-version: 3.3
 
     - name: Publish to RubyGems
       env:
diff --git a/.ruby-version b/.ruby-version
index 0aec50e..37d02a6 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.1.4
+3.3.8
diff --git a/dev.yml b/dev.yml
index 60bfd8d..36f3c6d 100644
--- a/dev.yml
+++ b/dev.yml
@@ -2,10 +2,12 @@
 version: "2.0"
 
 setup:
-  ruby: 3.1.4
-  bundler: 2.4.21
+  ruby: 3.3.8
+  bundler: 2.6.9
 
 commands:
   test:
     summary: Run the project's specs
-    command: bundle exec appraisal rspec spec/
+    command: |
+      bundle exec appraisal install
+      bundle exec appraisal rspec spec/
diff --git a/lib/inheritance_integer_type/version.rb b/lib/inheritance_integer_type/version.rb
index afb9255..b9d033f 100644
--- a/lib/inheritance_integer_type/version.rb
+++ b/lib/inheritance_integer_type/version.rb
@@ -1,3 +1,3 @@
 module InheritanceIntegerType
-  VERSION = "0.2.1"
+  VERSION = "0.2.2"
 end