diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index f6a81a6..8b02f83 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -20,18 +20,18 @@ jobs:
       matrix:
         ruby-version: [
           '3.1.4',
-          '3.2.3',
-          '3.3.0',
+          '3.2.5',
+          '3.3.4',
         ]
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Ruby
     # To automatically get bug fixes and new Ruby versions for ruby/setup-ruby,
     # change this to (see https://github.com/ruby/setup-ruby#versioning):
       uses: ruby/setup-ruby@v1 # Was: uses: ruby/setup-ruby@473e4d8fe5dd94ee328fdfca9f8c9c7afc9dae5e
       with:
         ruby-version: ${{ matrix.ruby-version }}
-        bundler: 2.4.14
+        bundler: 2.5.18
         bundler-cache: true # runs 'bundle install' and caches installed gems automatically
     - name: Run tests
       run: bundle exec rspec
diff --git a/tabulo.gemspec b/tabulo.gemspec
index 978b34f..7cfdbad 100644
--- a/tabulo.gemspec
+++ b/tabulo.gemspec
@@ -31,9 +31,9 @@ Gem::Specification.new do |spec|
   spec.add_runtime_dependency "tty-screen", "0.8.2"
   spec.add_runtime_dependency "unicode-display_width", "~> 2.5"
 
-  spec.add_development_dependency "bundler", "~> 2.4"
-  spec.add_development_dependency "rake", "~> 13.0.6"
-  spec.add_development_dependency "rspec", "~> 3.11"
+  spec.add_development_dependency "bundler", "~> 2.5"
+  spec.add_development_dependency "rake", "~> 13.2.1"
+  spec.add_development_dependency "rspec", "~> 3.13"
   spec.add_development_dependency "simplecov"
   spec.add_development_dependency "simplecov-lcov"
   spec.add_development_dependency "yard"