diff --git a/.cirrus.yml b/.cirrus.yml
deleted file mode 100644
index b07270d..0000000
--- a/.cirrus.yml
+++ /dev/null
@@ -1,91 +0,0 @@
-task:
-  name: Lint
-  container:
-    image: golangci/golangci-lint:latest
-    cpu: 2
-    memory: 4096
-  prepare_script:
-    - apt-get update
-    - apt-get install -y libx11-dev
-  lint_script:
-    - golangci-lint run -v --output.json.path golangci.json
-  always:
-    report_artifacts:
-      path: golangci.json
-      type: text/json
-      format: golangci
-
-task:
-  name: Test (Linux)
-  alias: Tests
-  container:
-    image: golang:latest
-
-  prepare_script:
-    - apt-get update
-    - apt-get install -y libx11-dev
-  test_script: go test -v ./...
-
-task:
-  name: Test (macOS)
-  alias: Tests
-  macos_instance:
-    image: ghcr.io/cirruslabs/macos-runner:sequoia
-
-  prepare_script: brew install go
-  test_script: go test -v ./...
-
-task:
-  name: Check for lacking "buf generate" invocation
-
-  container:
-    image: golang:latest
-
-  install_buf_script: go install github.com/bufbuild/buf/cmd/buf@v1.50.0
-  generate_script: buf generate
-  check_script: git diff --exit-code
-
-task:
-  only_if: $CIRRUS_BRANCH != '' && $CIRRUS_PR == '' && $CIRRUS_REPO_OWNER == 'cirruslabs'
-  name: buf push
-
-  container:
-    image: bufbuild/buf
-
-  login_script: echo "$BUF_TOKEN" | buf registry login --token-stdin
-  push_script: buf push --git-metadata
-
-  env:
-    BUF_TOKEN: ENCRYPTED[!8ee7eb2504cc84b08d4a7c0dacbe103640b1feaa26d06f0df010784e872d39e65a0cdea3fc7c09b065a917a77113b96b!]
-
-task:
-  name: Release (Dry Run)
-  only_if: $CIRRUS_TAG == ''
-  macos_instance:
-    image: ghcr.io/cirruslabs/macos-runner:sequoia
-  depends_on:
-    - Lint
-    - Tests
-  install_script:
-    - brew install go
-    - brew install --cask goreleaser/tap/goreleaser-pro
-  release_script: goreleaser release --clean --snapshot
-  goreleaser_artifacts:
-    path: "dist/**"
-
-task:
-  name: Release
-  only_if: $CIRRUS_TAG != ''
-  macos_instance:
-    image: ghcr.io/cirruslabs/macos-runner:sequoia
-  depends_on:
-    - Lint
-    - Tests
-  env:
-    GITHUB_TOKEN: ENCRYPTED[!98ace8259c6024da912c14d5a3c5c6aac186890a8d4819fad78f3e0c41a4e0cd3a2537dd6e91493952fb056fa434be7c!]
-    FURY_TOKEN: ENCRYPTED[!97fe4497d9aca60a3d64904883b81e21f19706c6aedda625c97f62f67ec46b8efa74c55699956158bbf0a23726e7d9f6!]
-    GORELEASER_KEY: ENCRYPTED[!9b80b6ef684ceaf40edd4c7af93014ee156c8aba7e6e5795f41c482729887b5c31f36b651491d790f1f668670888d9fd!]
-  install_script:
-    - brew install go
-    - brew install --cask goreleaser/tap/goreleaser-pro
-  release_script: goreleaser
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..83bfdce
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,158 @@
+name: CI
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+    tags:
+      - '*'
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-24.04
+    timeout-minutes: 15
+    steps:
+      - uses: actions/checkout@v5
+      - uses: actions/setup-go@v5
+        with:
+          go-version: stable
+      - name: Install system dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libx11-dev
+      - name: Install golangci-lint
+        run: go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@latest
+      - name: Lint
+        run: golangci-lint run -v --output.json.path golangci.json
+      - name: Upload golangci report
+        if: always()
+        uses: actions/upload-artifact@v4
+        with:
+          name: golangci-report
+          path: golangci.json
+          if-no-files-found: ignore
+
+  test_linux:
+    name: Test (Linux)
+    runs-on: ubuntu-24.04
+    timeout-minutes: 20
+    steps:
+      - uses: actions/checkout@v5
+      - uses: actions/setup-go@v5
+        with:
+          go-version: stable
+      - name: Install system dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libx11-dev
+      - name: Test
+        run: go test -v ./...
+
+  test_macos:
+    name: Test (macOS)
+    runs-on: macos-15
+    timeout-minutes: 20
+    steps:
+      - uses: actions/checkout@v5
+      - uses: actions/setup-go@v5
+        with:
+          go-version: stable
+      - name: Test
+        run: go test -v ./...
+
+  buf_generate:
+    name: Check for lacking buf generate invocation
+    runs-on: ubuntu-24.04
+    timeout-minutes: 15
+    steps:
+      - uses: actions/checkout@v5
+      - uses: actions/setup-go@v5
+        with:
+          go-version: stable
+      - name: Install buf
+        run: go install github.com/bufbuild/buf/cmd/buf@v1.50.0
+      - name: Generate
+        run: buf generate
+      - name: Check generated files
+        run: git diff --exit-code
+
+  buf_push:
+    name: buf push
+    if: github.event_name == 'push' && github.ref_type == 'branch' && github.repository == 'cirruslabs/tart-guest-agent'
+    needs:
+      - buf_generate
+    runs-on: ubuntu-24.04
+    timeout-minutes: 15
+    env:
+      BUF_TOKEN: ${{ secrets.BUF_TOKEN }}
+    steps:
+      - uses: actions/checkout@v5
+      - uses: actions/setup-go@v5
+        with:
+          go-version: stable
+      - name: Install buf
+        run: go install github.com/bufbuild/buf/cmd/buf@v1.50.0
+      - name: Log in to buf
+        run: echo "$BUF_TOKEN" | buf registry login --token-stdin
+      - name: Push
+        run: buf push --git-metadata
+
+  release_dry_run:
+    name: Release (Dry Run)
+    if: github.event_name != 'pull_request' && github.ref_type != 'tag'
+    needs:
+      - lint
+      - test_linux
+      - test_macos
+    runs-on: macos-15
+    timeout-minutes: 45
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-go@v5
+        with:
+          go-version: stable
+      - name: Install GoReleaser
+        run: brew install --cask goreleaser/tap/goreleaser-pro
+      - name: Build snapshot
+        run: goreleaser release --clean --snapshot
+      - name: Upload dist
+        uses: actions/upload-artifact@v4
+        with:
+          name: dist-dry-run
+          path: dist/**
+          if-no-files-found: ignore
+
+  release:
+    name: Release
+    if: github.ref_type == 'tag'
+    needs:
+      - lint
+      - test_linux
+      - test_macos
+    runs-on: macos-15
+    timeout-minutes: 45
+    permissions:
+      contents: write
+    env:
+      FURY_TOKEN: ${{ secrets.FURY_TOKEN }}
+      GITHUB_TOKEN: ${{ github.token }}
+      GORELEASER_KEY: ${{ secrets.GORELEASER_KEY }}
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-go@v5
+        with:
+          go-version: stable
+      - name: Install GoReleaser
+        run: brew install --cask goreleaser/tap/goreleaser-pro
+      - name: Release
+        run: goreleaser