diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..59b358b
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,61 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - "v*"
+  pull_request:
+
+jobs:
+  build:
+    name: ${{ matrix.friendlyName }} ${{ matrix.arch }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        go: [1.12.x, 1.x, master]
+        os: [macos-10.15]
+        arch: [amd64, arm64]
+        include:
+          - os: macos-10.15
+            friendlyName: macOS
+          # - os: windows-2019
+          #   friendlyName: Windows
+    timeout-minutes: 60
+    env:
+      # Needed for macOS arm64 until hosted macos-11.0 runners become available
+      SDKROOT: /Library/Developer/CommandLineTools/SDKs/MacOSX11.1.sdk
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: recursive
+      - name: Use go ${{ matrix.go }}
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ matrix.go }}
+
+      - name: Get app version
+        run: |
+          echo "GIT_VERSION=`git describe --tags`" >> $GITHUB_ENV
+
+      - name: Build
+        run: |
+          CGO_ENABLED=1 GOARCH=${{ matrix.arch }} GO111MODULE=on go build \
+            -o smimesign -ldflags "-X main.versionString=${{ env.GIT_VERSION }}" .
+          tar czf smimesign-${{ env.GIT_VERSION }}-macos-${{ matrix.arch }}.tgz \
+            smimesign
+        env:
+          TARGET_ARCH: ${{ matrix.arch }}
+
+      - name: Run tests
+        run: GO111MODULE=on go test -v ./...
+
+      - name: Release
+        uses: softprops/action-gh-release@v1
+        if: startsWith(github.ref, 'refs/tags/') && matrix.go == '1.x'
+        with:
+          files: smimesign-${{ env.GIT_VERSION }}-macos-${{ matrix.arch }}.tgz
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 8cf13c4..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,37 +0,0 @@
-os: osx
-osx_image: xcode12.3
-
-language: go
-
-go:
-  - 1.12.x
-  - 1.x
-  - master
-
-git:
-  depth: false
-
-env:
-  - TARGET_ARCH: amd64
-    SDKROOT: /Library/Developer/CommandLineTools/SDKs/MacOSX11.1.sdk
-  - TARGET_ARCH: arm64
-    SDKROOT: /Library/Developer/CommandLineTools/SDKs/MacOSX11.1.sdk
-
-install: ''
-
-script:
-  - GIT_VERSION=$(git describe --tags)
-  - CGO_ENABLED=1 GOARCH=$TARGET_ARCH GO111MODULE=on go build -o smimesign -ldflags "-X main.versionString=$GIT_VERSION" .
-  - tar czf smimesign-$GIT_VERSION-macos-$TARGET_ARCH.tgz smimesign
-  - GO111MODULE=on go test -v ./...
-
-deploy:
-  name: $GIT_VERSION
-  provider: releases
-  skip_cleanup: true
-  file: smimesign-$GIT_VERSION-macos-$TARGET_ARCH.tgz
-  on:
-    tags: true
-    go: 1.x
-  api_key:
-    secure: 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