diff --git a/.circleci/config.yml b/.circleci/config.yml
deleted file mode 100644
index 6e188972..00000000
--- a/.circleci/config.yml
+++ /dev/null
@@ -1,111 +0,0 @@
-version: 2
-
-defaults: &defaults
-  working_directory: /tmp/project
-  docker:
-    - image: arcanemagus/atom-docker-ci:stable
-  environment:
-    # Pre-install the required language file as package activation doesn't wait
-    # for the installation to complete.
-    APM_TEST_PACKAGES: "language-postcss"
-  steps:
-    # Restore project state
-    - attach_workspace:
-        at: /tmp
-    - run:
-        name: Create VFB for Atom to run in
-        command: /usr/local/bin/xvfb_start
-    - run:
-        name: Atom version
-        command: ${ATOM_SCRIPT_PATH} --version
-    - run:
-        name: APM version
-        command: ${APM_SCRIPT_PATH} --version
-    - run:
-        name: Package APM package dependencies
-        command: |
-          if [ -n "${APM_TEST_PACKAGES}" ]; then
-            for pack in ${APM_TEST_PACKAGES}; do
-            ${APM_SCRIPT_PATH} install "${pack}"
-            done
-          fi;
-    - run:
-        name: Package dependencies
-        command: ${APM_SCRIPT_PATH} install
-    - run:
-        name: Cleaning package
-        command: ${APM_SCRIPT_PATH} clean
-    - run:
-        name: Package specs
-        command: ${ATOM_SCRIPT_PATH} --test spec
-    # Cache node_modules
-    - save_cache:
-        paths:
-          - node_modules
-        key: v3-dependencies-{{ .Branch }}-{{ checksum "package.json" }}-{{ checksum "package-lock.json"}}
-
-jobs:
-  checkout_code:
-    <<: *defaults
-    docker:
-      - image: circleci/node:latest
-    steps:
-      - checkout
-      # Restore node_modules from the last build
-      - restore_cache:
-          keys:
-          # Get latest cache for this package.json and package-lock.json
-          - v3-dependencies-{{ .Branch }}-{{ checksum "package.json" }}-{{ checksum "package-lock.json"}}
-          # Fallback to the current package.json
-          - v3-dependencies-{{ .Branch }}-{{ checksum "package.json" }}-
-          # Fallback to the last build for this branch
-          - v3-dependencies-{{ .Branch }}-
-          # Fallback to the last available master branch cache
-          - v3-dependencies-master-
-          # Don't go further down to prevent dependency issues from other branches
-      # Save project state for next steps
-      - persist_to_workspace:
-          root: /tmp
-          paths:
-            - project
-  lint:
-    <<: *defaults
-    docker:
-      - image: circleci/node:latest
-    steps:
-      # Restore project state
-      - attach_workspace:
-          at: /tmp
-      - run:
-          name: Node.js Version
-          command: node --version
-      - run:
-          name: NPM Version
-          command: npm --version
-      - run:
-          name: Install any remaining dependencies
-          command: npm ci
-      - run:
-          name: Lint code
-          command: npm run lint
-  stable:
-    <<: *defaults
-  beta:
-    <<: *defaults
-    docker:
-      - image: arcanemagus/atom-docker-ci:beta
-
-workflows:
-  version: 2
-  test_package:
-    jobs:
-      - checkout_code
-      - lint:
-          requires:
-            - checkout_code
-      - stable:
-          requires:
-            - lint
-      - beta:
-          requires:
-            - lint
diff --git a/.github/workflows/pulsar-test.yml b/.github/workflows/pulsar-test.yml
new file mode 100644
index 00000000..8cb8c203
--- /dev/null
+++ b/.github/workflows/pulsar-test.yml
@@ -0,0 +1,28 @@
+name: CI
+on:
+  - push
+  - pull_request
+jobs:
+  test:
+    name: Test
+    strategy:
+      matrix:
+        os: [ubuntu-20.04, macos-latest, windows-2019]
+      fail-fast: false
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 5
+    steps:
+      - name: Checkout the Latest Package Code
+        uses: actions/checkout@v3
+      - name: Setup Pulsar Editor
+        uses: pulsar-edit/action-pulsar-dependency@v3.3
+      - name: Set up node
+        uses: actions/setup-node@v3
+        with:
+          node-version: 20
+      - name: Install deps
+        run: npm install
+      - name: Run the headless Pulsar Tests
+        uses: coactions/setup-xvfb@v1.0.1
+        with:
+          run: pulsar --test spec
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index d66d3b14..00000000
--- a/.travis.yml
+++ /dev/null
@@ -1,74 +0,0 @@
-### Project specific config ###
-language: node_js
-node_js: lts/*
-install: skip
-os: linux
-
-env:
-  global:
-    # Pre-install the required language file as package activation doesn't wait
-    # for the installation to complete.
-    - APM_TEST_PACKAGES="language-postcss"
-
-jobs:
-  include:
-    # Test Atom versions
-    - stage: test
-      env: ATOM_CHANNEL=stable
-    - stage: test
-      env: ATOM_CHANNEL=beta
-
-    # Check the commit messages and run the extra lint script
-    - stage: test
-      install:
-        - npm install
-      before_script: skip
-      script:
-        - commitlint-travis
-
-    - stage: release
-      # Since the deploy needs APM, currently the simplest method is to run
-      # build-package.sh, which requires the specs to pass.
-      before_deploy:
-        - export PATH=${PATH}:${HOME}/atom/usr/bin/
-      deploy:
-        provider: script
-        skip_cleanup: true
-        script:
-          - npx semantic-release
-
-### Generic setup follows ###
-script:
-  - curl -s -O https://raw.githubusercontent.com/atom/ci/master/build-package.sh
-  - chmod u+x build-package.sh
-  - "./build-package.sh"
-
-notifications:
-  email:
-    on_success: never
-    on_failure: change
-
-branches:
-  only:
-    - master
-    - "/^greenkeeper/.*$/"
-
-git:
-  depth: 10
-
-dist: trusty
-
-sudo: false
-
-addons:
-  apt:
-    packages:
-    - build-essential
-    - git
-    - libgnome-keyring-dev
-    - fakeroot
-
-stages:
-  - test
-  - name: release
-    if: (NOT type = pull_request) AND branch = master
diff --git a/appveyor.yml b/appveyor.yml
deleted file mode 100644
index 8298df37..00000000
--- a/appveyor.yml
+++ /dev/null
@@ -1,22 +0,0 @@
-### Project specific config ###
-environment:
-  APM_TEST_PACKAGES: language-postcss
-
-  matrix:
-  - ATOM_CHANNEL: stable
-  - ATOM_CHANNEL: beta
-
-### Generic setup follows ###
-build_script:
-  - ps: iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/atom/ci/master/build-package.ps1'))
-
-branches:
-  only:
-    - master
-
-version: "{build}"
-platform: x64
-clone_depth: 10
-skip_tags: true
-test: off
-deploy: off
diff --git a/package.json b/package.json
index 0827eef0..baea3a2b 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
     "atom": ">=1.7.0 <2.0.0"
   },
   "scripts": {
-    "test": "atom --test spec",
+    "test": "pulsar --test spec",
     "lint": "eslint .",
     "prepare": "husky install"
   },
@@ -69,7 +69,6 @@
   "devDependencies": {
     "@commitlint/cli": "17.7.1",
     "@commitlint/config-conventional": "17.7.0",
-    "@commitlint/travis-cli": "17.7.1",
     "eslint": "8.47.0",
     "eslint-config-airbnb-base": "15.0.0",
     "eslint-plugin-import": "2.28.1",