diff --git a/.circleci/config.yml b/.circleci/config.yml
index 25994fd..4af5577 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -3,7 +3,7 @@ version: 2
 jobs:
   build:
     docker:
-      - image: circleci/ruby:2.5.6
+      - image: cimg/ruby:3.1.4
     steps:
       - checkout
       - run:
diff --git a/.github/workflows/codeql-scheduled.yml b/.github/workflows/codeql-scheduled.yml
index 0cb76ed..9148d28 100644
--- a/.github/workflows/codeql-scheduled.yml
+++ b/.github/workflows/codeql-scheduled.yml
@@ -42,7 +42,7 @@ jobs:
     - uses: ruby/setup-ruby@v1
       with:
         ruby-version: 2.5 # The version of Ruby to use
-        bundler: 1.17.3
+        bundler: 2.4.19
         bundler-cache: true # runs 'bundle install' and caches installed gems automatically
       #env: 
       #  BUNDLE_GEMFILE: ./path/to/Gemfile # Change this to the path to your Gemfile if not in root
diff --git a/.ruby-version b/.ruby-version
index ecd7ee5..0aec50e 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.5.8
+3.1.4
diff --git a/ravelin.gemspec b/ravelin.gemspec
index e072088..6f200c7 100644
--- a/ravelin.gemspec
+++ b/ravelin.gemspec
@@ -22,7 +22,7 @@ Gem::Specification.new do |spec|
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ['lib']
 
-  spec.add_development_dependency 'bundler', '~> 1.17.3'
+  spec.add_development_dependency 'bundler', '~> 2.4.19'
   spec.add_development_dependency 'rake', '~> 13.0'
   spec.add_development_dependency 'rspec', '~> 3.0'
   spec.add_development_dependency 'webmock', '~> 3.18'