diff --git a/.github/upload-key.id_rsa b/.github/upload-key.id_rsa
new file mode 100644
index 00000000..2efed091
--- /dev/null
+++ b/.github/upload-key.id_rsa
@@ -0,0 +1,39 @@
+-----BEGIN OPENSSH PRIVATE KEY-----
+b3BlbnNzaC1rZXktdjEAAAAACmFlczI1Ni1jdHIAAAAGYmNyeXB0AAAAGAAAABC7v7wTRG
+0X12QigBYhN1VqAAAAEAAAAAEAAAGXAAAAB3NzaC1yc2EAAAADAQABAAABgQDWB7J+7gsf
+iAJg+B7DhNSLAF2qoDIEYaSGjHyeO4qb+Rulf0McEsyM19jFuC+ZFyGe3F8h4Aqudmhj+M
+j7LyNZH0Pc5CLI9hG6hIVJ1h3okLUjv0wl1SkiP5LUMX66Sq+xNTXlZO+TwjNu0SMo/scY
+d5Vq6ROcfG0qTA6vVD0Zhg5m0Pagat8AWE177QWyLUE+eCbkcNaxSSb10UVqOQzx9njmM3
+MrMVBAPTu2vHNgFuFpuRtfLUM1wP7/fuQRzI94XwaDWcHnKPQ260zLGhF4iEnaTep1CVME
+PuiH4O6EjADnGjYU+E7ZmGZCswUXP2pB8kPc5/IwXvI4Ig2b0aLwEHGCJjyVysroX8zMGT
+dcrwnrD8EBRR2qp32TP2TbVj1+Q73euRGYqTwORupyD3Drn0D5+OfAIHxybM/rN918cMm7
+1tAHqTaJ+EKaEKdOvgYdFsKh81PdDioKVsdXZHT/e32GdSNyLLQ3X3ixfI4m9HhMtRWJWs
+eiSzC0YuyD9v8AAAWQY/nE1nbgxehIvUhGWSNEBKMvktMzx9gofNilzFZwAU/a9sYu+muB
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+e5wCHCBkwkcQZmKq8H4YFLJ5REZKZQ8zFpFHO1O+VgYvF1cJyle+QqqGGT3Bc/OSk2bsI+
+My22UI1vogE4/4e4qBGS+HuleV6AFBwBWqw1gnvSDCZj+SWE2DPWO2l8Q7J1fJVgkvxUXs
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+dRbsIhxVPZL0q4plLRztXsLlNt5F99qnH0pqrg53oSTOGvw1C8Wtyga9KLNQVDUf/ggPxo
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+QHU4xsyJ++ZconvlgSJadZ5sCmzqZEvWP28ZzZPb6NyIw1phI3jHh2nxU3oX3M6yyYg1Re
+vmpgF5g8AqcwhBatm1F6H86JcTTJ20YzUotNBdSN8nM2Q2RoxvXLAxOwXmI3glCqNbD3AQ
+++uWSYFKT7ZzfptBG2KQenTs5yaCXz+ztpVs/CGh/p29By34SwpqL3ohS/eVhK869Vb+fV
+AQ/5CZ+8PevdDsNt5tdK/mQZAVY8KpI/WOljQNFO5iLIO0okfVAaFhVr+2Xk+FsnsOjncy
+owTHtS82bG8VMOl3I5xeEp01GYd5J/EzHhEgjYmhINt/iynqGcw+rv9SBAtqj+knZUm6yx
+hyJntOGpOlspslzSbz8snps9Th7WyxaL2xFbq4EoQ3M86J5Np/Ai361JaaOpyWox8grdRx
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+e0zyWog4YT3rN3ZqovZR9B+hXjdturuEUSDPaeOcHXeTmLtL4tMoEb1S/i4L2FOG8Rr+V5
+gHkuOw81F2u16Q4UdwdgobSIHuAg5ky9zBAvoZKnttRqicaLM1XhwlX1QsXzZTOBeECZtW
+Xpu1VFR0CwsDTxTH0oegTAq1Ndzo86rhDbV8QkffboxLAw78dXKqVTNHBlR4Nv1I7CAWDS
+sm+X85vdX91dvp7ZnAx7/jCTd15j/66X3k+hgNCGYvioW05HMWdqQzuL5h6+DQ4ZRNmu7f
+musSnvpycKBn5bxpqIeE3okil3S64KeNhm7GbofMmN0zHSlxR8xqlBX2Ne6oXtoX00yXB5
+v0d5ovx8TlZo4sVGMUlGFci72y8THk9j1/Du159uEPSUCHNir/K89mtCr8mgidWNmc3/ir
+ioU8U7ImPuL8ebn6kNQccW/0nfg=
+-----END OPENSSH PRIVATE KEY-----
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 00000000..2760751f
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,153 @@
+name: CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  lint:
+    name: Linter
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js 15.x
+        uses: actions/setup-node@v2
+        with:
+          node-version: 15.x
+      - run: npm ci
+      - run: make lint complexity-analysis
+
+  run-tests:
+    name: Testsuite
+    needs: lint
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        include:
+          - engine: ringojs
+            version: 2.0.0
+          - engine: rhino
+            version: 1.7.13
+          - engine: quickjs
+            version: '2020-09-06'
+          - engine: quickjs
+            version: '2020-11-08'
+          - engine: quickjs
+            version: '2021-03-27'
+          - engine: node.js
+            version: 10.x
+          - engine: node.js
+            version: 12.x
+          - engine: node.js
+            version: 14.x
+          - engine: node.js
+            version: 15.x
+          - engine: duktape
+            version: 2.4.0
+          - engine: duktape
+            version: 2.5.0
+          - engine: duktape
+            version: 2.6.0
+
+    steps:
+      - uses: actions/checkout@v2
+
+      # Duktape
+      - name: Install Duktape ${{ matrix.version }}
+        if: ${{ matrix.engine == 'duktape' }}
+        run: |
+          PACKAGE="duktape-${{ matrix.version }}"
+          cd /opt
+          wget "https://duktape.org/$PACKAGE.tar.xz"
+          tar xf "$PACKAGE.tar.xz"
+          make -C "$PACKAGE/" -f Makefile.cmdline DEFINES=-DDUK_CMDLINE_FILEIO
+          sudo install -Dm755 "$PACKAGE/duk" /usr/local/bin/duk
+          rm -rf "$PACKAGE.tar.xz" "$PACKAGE/"
+      - name: Run tests
+        if: ${{ matrix.engine == 'duktape' }}
+        run: cd test; duk runner.js
+
+      # Node.js
+      - name: Install Node.js ${{ matrix.version }}
+        if: ${{ matrix.engine == 'node.js' }}
+        uses: actions/setup-node@v2
+        with:
+          node-version: ${{ matrix.version }}
+      - run: node test/runner.js --console
+        if: ${{ matrix.engine == 'node.js' }}
+
+      # QuickJS
+      - name: Install QuickJS ${{ matrix.version }}
+        if: ${{ matrix.engine == 'quickjs' }}
+        run: |
+          cd /opt
+          git clone --bare 'https://gitlab.com/felix.s-git-mirrors/quickjs.git'
+          git --git-dir=quickjs.git worktree add quickjs "${{ matrix.version }}"
+          make -C quickjs qjs
+          sudo install -Dm755 quickjs/qjs /usr/local/bin/qjs
+          rm -rf quickjs.git quickjs
+      - name: Run tests
+        if: ${{ matrix.engine == 'quickjs' }}
+        # XXX: The default QuickJS stack size limit is 256 KiB;
+        # QuickJS likes to throw stack overflow errors when running the test suite at that limit,
+        # so we increase it to 8 MiB. The issue is intermittent and non-deterministic;
+        # it may or may not be an engine bug
+        run: cd test; qjs --stack-size 8388608 --std runner.js
+
+      # Rhino
+      - name: Download Rhino ${{ matrix.version }}
+        if: ${{ matrix.engine == 'rhino' }}
+        run: |
+          VERSION="${{ matrix.version }}"
+          wget "https://github.com/mozilla/rhino/releases/download/Rhino${VERSION//./_}_Release/rhino-$VERSION.jar" -O /opt/rhino.jar
+      - name: Run tests
+        if: ${{ matrix.engine == 'rhino' }}
+        run: cd test; java -jar /opt/rhino.jar -opt -1 runner.js
+
+      # RingoJS
+      - name: Download and unpack RingoJS ${{ matrix.version }}
+        if: ${{ matrix.engine == 'ringojs' }}
+        run: |
+          VERSION="${{ matrix.version }}"
+          wget "https://github.com/ringo/ringojs/releases/download/v${VERSION}/ringojs-${VERSION}.zip"
+          unzip "ringojs-${VERSION}.zip" -d /opt/
+          rm "ringojs-${VERSION}.zip"
+      - name: Install RingoJS ${{ matrix.version }}
+        if: ${{ matrix.engine == 'ringojs' }}
+        run: |
+          VERSION="${{ matrix.version }}"
+          sed -i -e '/-jar/ i \    -Dringo.classpath="$RINGO_HOME/lib/**" \\' "/opt/ringojs-${VERSION}/bin/ringo"
+          sudo ln -s "/opt/ringojs-${VERSION}/bin/ringo" /usr/local/bin/ringo
+          sudo chmod +x /usr/local/bin/ringo
+      - name: Run tests
+        if: ${{ matrix.engine == 'ringojs' }}
+        run: ringo -o -1 test/runner.js 2>&1
+
+  check-coverage:
+    name: Coverage analysis
+    needs: run-tests
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - run: npm ci
+      - run: make coverage-analysis
+
+  update-docs:
+    name: Update documentation
+    if: ${{ github.event_name == 'push' && github.event.ref == 'refs/heads/master' }}
+    needs: check-coverage
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - run: |
+          git clone --depth=1 --branch gh-pages git@github.com:fstirlitz/luaparse.git gh-pages
+          cd gh-pages
+          make
+          git add .
+          git commit --message "build documentation"
+          git push origin gh-pages
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 00000000..5722b85c
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,47 @@
+name: Upload release
+
+on:
+  release:
+    types: [created]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v2
+        with:
+          node-version: 12
+      - run: npm ci
+      - run: npm test
+
+  publish-npm:
+    needs: build
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v2
+        with:
+          node-version: 12
+          registry-url: https://registry.npmjs.org/
+      - run: npm ci
+      - run: npm publish
+        env:
+          NODE_AUTH_TOKEN: ${{secrets.npm_token}}
+
+  publish-gpr:
+    needs: build
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v2
+        with:
+          node-version: 12
+          registry-url: https://npm.pkg.github.com/
+      - run: npm ci
+      - run: npm publish
+        env:
+          NODE_AUTH_TOKEN: ${{secrets.GITHUB_TOKEN}}
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 8d20399c..00000000
--- a/.travis.yml
+++ /dev/null
@@ -1,42 +0,0 @@
-language: node_js
-node_js:
-  - '10'
-before_install:
-  - npm install -g bower
-  - sudo chown "$USER:" /opt
-  - sudo apt-get update -qq
-  - sudo apt-get install -qq make gcc
-  - PACKAGE=duktape-2.4.0; ( cd /opt && wget "https://duktape.org/$PACKAGE.tar.xz" && tar xf "$PACKAGE.tar.xz" && make -C "$PACKAGE/" -f Makefile.cmdline DEFINES=-DDUK_CMDLINE_FILEIO && sudo install -Dm755 "$PACKAGE/duk" /usr/local/bin/duk && rm -rf "$PACKAGE.tar.xz" "$PACKAGE/" )
-  - PACKAGE=quickjs; VERSION=2020-07-05; ( cd /opt && git clone --bare 'https://gitlab.com/felix.s-git-mirrors/quickjs.git' && git --git-dir=quickjs.git worktree add "$PACKAGE/" "$VERSION" && make -C "$PACKAGE/" qjs && sudo install -Dm755 "$PACKAGE/qjs" /usr/local/bin/qjs && rm -rf "quickjs.git" "$PACKAGE/" )
-  - PACKAGE=Rhino1_7R4_RELEASE; wget https://github.com/mozilla/rhino/archive/$PACKAGE.zip && unzip $PACKAGE -d /opt/ && rm $PACKAGE.zip
-  - PACKAGE=Rhino1_7R4_RELEASE; echo -e '#!/bin/sh\njava -jar /opt/Rhino1_7R4_RELEASE/js.jar $@' | sudo tee /usr/local/bin/rhino && sudo chmod +x /usr/local/bin/rhino
-  - PACKAGE=ringojs-0.9; wget http://ringojs.org/downloads/$PACKAGE.zip && unzip $PACKAGE -d /opt/ && rm $PACKAGE.zip
-  - PACKAGE=ringojs-0.9; sudo ln -s /opt/$PACKAGE/bin/ringo /usr/local/bin/ringo && sudo chmod +x /usr/local/bin/ringo
-before_deploy:
-  - make build
-deploy:
-  - provider: npm
-    email: public@oxy.fi
-    api_key:
-      secure: c1xVoKfBO4ZGplOkwugeWs9qtC2NQAXLS6ntUAhdk+aeFrxQBMR5oUQ721IM8V9hYhuNv8qJZowoJNyzGNr/43uh9ZSCohddX6OIyVc1Lu84JEQAt1W/WgKF8j0d/p9+WFD3EZOyvf4eotAjamJbsXkGN4GlsD0f2TKOKlt0/YY=
-    on:
-      tags: true
-      all_branches: true
-  - provider: releases
-    api_key:
-      secure: GGN5c5EDpUwBduAiXefBvQjcKH8HKRvMaAHLEIvIm547sR7YUz/vynkNd7uInPG8ZCD73GHxZVxOk335TsHg7XR6Tz+mm3PmyMmqHcCMqSG+hR+s++oCiC2R04q/yM0LsaWlKPr/xzSg6dZynJsW0hy7AinXlK4g4B3kI5wtGls=
-    file:
-      - dist/luaparse.js
-      - dist/luaparse.min.js
-    skip_cleanup: true
-    on:
-      tags: true
-      all_branches: true
-after_success:
-  - '[ "$TRAVIS_PULL_REQUEST" = "false" ] && [ "$TRAVIS_BRANCH" = "master" ] && BUILD_DOCS=true || BUILD_DOCS=false'
-  - '[ "$BUILD_DOCS" = "true" ] && openssl aes-256-cbc -K $encrypted_ce12c8d20fd6_key -iv $encrypted_ce12c8d20fd6_iv -in .travis/deploy_key.enc -out .travis/deploy_key -d'
-  - '[ "$BUILD_DOCS" = "true" ] && chmod 600 .travis/deploy_key && eval `ssh-agent -s` && ssh-add .travis/deploy_key'
-  - '[ "$BUILD_DOCS" = "true" ] && git clone --branch gh-pages git@github.com:fstirlitz/luaparse.git gh-pages && cd gh-pages'
-  - '[ "$BUILD_DOCS" = "true" ] && make'
-  - '[ "$BUILD_DOCS" = "true" ] && git config user.name "Travis" && git config user.email "public@oxy.fi"'
-  - '[ "$BUILD_DOCS" = "true" ] && git add . && git commit --message "build documentation" && git push origin gh-pages'
diff --git a/.travis/deploy_key.enc b/.travis/deploy_key.enc
deleted file mode 100644
index 7ceadafa..00000000
Binary files a/.travis/deploy_key.enc and /dev/null differ
diff --git a/README.md b/README.md
index 802e8783..ce7fa32c 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# luaparse [![Build Status](https://travis-ci.org/fstirlitz/luaparse.svg?branch=master)](https://travis-ci.org/fstirlitz/luaparse)
+# luaparse
 
 A Lua parser written in JavaScript, originally written by Oskar Schöldström for his bachelor's thesis at Arcada.