diff --git a/.circleci/config.yml b/.circleci/config.yml
deleted file mode 100644
index d96ae0b..0000000
--- a/.circleci/config.yml
+++ /dev/null
@@ -1,56 +0,0 @@
-version: 2.1
-
-jobs:
-  test:
-    parameters:
-      ruby_version:
-        description: "version tag for the veracross/ruby-app-base container"
-        type: string
-
-    docker:
-      - image: veracross/ruby-app-base:ruby-<< parameters.ruby_version >>
-
-    working_directory: ~/repo
-
-    steps:
-      - checkout
-
-      - restore_cache:
-          name: restore gem cache
-          keys:
-            - v1-bundle-<< parameters.ruby_version >>-{{ .Branch }}-{{ checksum "data-table.gemspec" }}
-            - v1-bundle-<< parameters.ruby_version >>-{{ .Branch }}-
-            - v1-bundle-<< parameters.ruby_version >>-
-
-      - run:
-          name: install dependencies
-          command: |
-            bundle check --path ./vendor/bundle || bundle install --jobs=3 --retry=3 --path vendor/bundle
-            bundle clean
-
-      - save_cache:
-          name: save gem cache
-          paths:
-            - ./vendor/bundle
-          key: v1-bundle-<< parameters.ruby_version >>-{{ .Branch }}-{{ checksum "data-table.gemspec" }}
-
-      - run:
-          name: run tests
-          command: |
-            bundle exec rspec --format RspecJunitFormatter \
-              --out ./tmp/test_results/results.xml \
-              --format progress
-
-      - store_test_results:
-          path: ./tmp/test_results
-
-workflows:
-  test_supported_ruby_versions:
-    jobs:
-      - test:
-          matrix:
-            parameters:
-              ruby_version:
-                - '2.5'
-                - '2.7'
-                - '3.1'
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..fff1c2d
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,43 @@
+name: ci
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        ruby-version:
+          - '2.7'
+          - '3.1'
+          - '3.2'
+          - '3.3'
+
+    name: test (ruby ${{ matrix.ruby-version }})
+
+    permissions:
+      contents: read
+      checks: write
+
+    env:
+      BUNDLE_ONLY: default test
+      CI: true
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby-version }}
+          bundler-cache: true
+
+      - run: bundle exec rspec
diff --git a/Gemfile b/Gemfile
index 94ef2e9..aea6c59 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,3 +2,11 @@ source "http://rubygems.org"
 
 # Specify your gem's dependencies in data-table.gemspec
 gemspec
+
+group :development, :test do
+  gem 'rake', '~> 12'
+  gem 'rspec', '~> 3'
+  gem 'rspec_junit_formatter'
+  gem 'guard', '~> 2'
+  gem 'guard-rspec', '~> 4'
+end
diff --git a/data-table.gemspec b/data-table.gemspec
index ef94673..db1e834 100644
--- a/data-table.gemspec
+++ b/data-table.gemspec
@@ -13,12 +13,6 @@ Gem::Specification.new do |s|
                     turning an array of hashes or ActiveRecord objects into an
                     HTML table.)
 
-  s.add_development_dependency 'rake', '~> 12'
-  s.add_development_dependency 'rspec', '~> 3'
-  s.add_development_dependency 'rspec_junit_formatter'
-  s.add_development_dependency 'guard', '~> 2'
-  s.add_development_dependency 'guard-rspec', '~> 4'
-
   s.files         = `git ls-files`.split("\n")
   s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
   s.executables   = `git ls-files -- bin/*`.split("\n").map { |f| File.basename(f) }