diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 51b66ad..b52bd19 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,9 +12,8 @@ jobs:
     strategy:
       matrix:
         ruby:
-          - 3.1
-          - 3.2
           - 3.3
+          - 3.4
     env:
       BUNDLE_GEMFILE: Gemfile
     name: "RSpec tests: Ruby ${{ matrix.ruby }}"
diff --git a/.ruby-version b/.ruby-version
index be94e6f..7bcbb38 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.2.2
+3.4.9
diff --git a/Gemfile.lock b/Gemfile.lock
index c750d83..8f50781 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -137,4 +137,4 @@ DEPENDENCIES
   tapioca
 
 BUNDLED WITH
-   2.4.12
+   4.0.15
diff --git a/pack_stats.gemspec b/pack_stats.gemspec
index 585b17f..7e4b8e3 100644
--- a/pack_stats.gemspec
+++ b/pack_stats.gemspec
@@ -19,7 +19,7 @@ Gem::Specification.new do |spec|
           'public gem pushes.'
   end
 
-  spec.required_ruby_version = Gem::Requirement.new('>= 2.6.0')
+  spec.required_ruby_version = Gem::Requirement.new('>= 3.3')
 
   # Specify which files should be added to the gem when it is released.
   spec.files = Dir['README.md', 'lib/**/*']