diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 2ae0358..a110245 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -15,10 +15,8 @@ jobs:
       fail-fast: false
       matrix:
         ruby-version:
-          - "3.0"
-          - "3.1"
-          - "3.2"
           - "3.3"
+          - "3.4"
     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 5841769..c276be6 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 3.3
+    - name: Set up Ruby 3.4
       uses: ruby/setup-ruby@v1
       with:
-        ruby-version: 3.3
+        ruby-version: 3.4
 
     - name: Publish to RubyGems
       env:
diff --git a/.ruby-version b/.ruby-version
index 37d02a6..7bcbb38 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.3.8
+3.4.9
diff --git a/Appraisals b/Appraisals
index 7a82df6..63e9331 100644
--- a/Appraisals
+++ b/Appraisals
@@ -1,8 +1,3 @@
-appraise "activerecord-6.1" do
-  gem "activerecord", "~> 6.1.0"
-  gem "concurrent-ruby", "1.3.4"
-end
-
 appraise "activerecord-7.0" do
   gem "activerecord", "~> 7.0.0"
   gem "concurrent-ruby", "1.3.4"
diff --git a/README.md b/README.md
index 7837c3b..4eb543a 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@ The problem with this approach is that `type` is a string (and by default it is
 
 ## Installation
 
-_Current versions of this gem (>= v0.2.0) only support Ruby 3+ and ActiveRecord >= v6.1. For Ruby <= v2.7 or ActiveRecord <= 6.0, use v0.1.3._
+_Current versions of this gem (>= v0.2.3) only support Ruby 3+ and ActiveRecord >= 7.0. For ActiveRecord 6.1, use v0.2.2. For Ruby <= v2.7 or ActiveRecord <= 6.0, use v0.1.3._
 
 Add this line to your application's Gemfile:
 
diff --git a/dev.yml b/dev.yml
index 7884d6a..18c75d9 100644
--- a/dev.yml
+++ b/dev.yml
@@ -2,7 +2,7 @@
 version: "2.0"
 
 setup:
-  ruby: 3.3.8
+  ruby: infer
   bundler: true
 commands:
   test:
diff --git a/inheritance_integer_type.gemspec b/inheritance_integer_type.gemspec
index 06fc8d9..65e6be3 100644
--- a/inheritance_integer_type.gemspec
+++ b/inheritance_integer_type.gemspec
@@ -21,7 +21,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "bundler"
   spec.add_development_dependency "rake"
   spec.add_development_dependency "rspec"
-  spec.add_development_dependency "activerecord", ">= 5.2"
+  spec.add_development_dependency "activerecord", ">= 7.0"
   spec.add_development_dependency "sqlite3", "~> 1.4"
   spec.add_development_dependency "pry"
 end
diff --git a/lib/inheritance_integer_type/version.rb b/lib/inheritance_integer_type/version.rb
index b9d033f..071b91a 100644
--- a/lib/inheritance_integer_type/version.rb
+++ b/lib/inheritance_integer_type/version.rb
@@ -1,3 +1,3 @@
 module InheritanceIntegerType
-  VERSION = "0.2.2"
+  VERSION = "0.2.3"
 end