diff --git a/.appveyor.yml b/.appveyor.yml
deleted file mode 100644
index 1f09e67..0000000
--- a/.appveyor.yml
+++ /dev/null
@@ -1,28 +0,0 @@
-image: Visual Studio 2015
-environment:
-  BOOST_ROOT: C:\Libraries\boost_1_66_0
-  # If the Gradle Daemon is used, AppVeyor waits forever for it to terminate
-  GRADLE_OPTS: -Dorg.gradle.daemon=false
-init:
-  # Print Remote Desktop information for debugging porposes
-  - ps: iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))
-build_script:
-  - mkdir build
-  - cd build
-  - cmake .. -G "Visual Studio 14 2015"
-  - cmake --build . --config Release --target package
-  - cd %APPVEYOR_BUILD_FOLDER%
-test_script:
-  - build\rhubarb\Release\runTests.exe
-artifacts:
-  - path: build\rhubarb-lip-sync-*.zip
-deploy:
-  provider: GitHub
-  release: $(APPVEYOR_REPO_TAG_NAME)
-  description: ''
-  auth_token:
-    secure: Gk7y8Cb9ImDBthgL56W1QMWDEp4oIcbUeKgXnkiBsy7G+V6H59MPXv0ZC7Zht8+3
-  artifact: /.*\.zip/
-  draft: true
-  on:
-    appveyor_repo_tag: true
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..68a678b
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,83 @@
+on: push
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - description: Windows / Visual Studio
+            os: windows-2019
+            cmakeOptions: '-G "Visual Studio 16 2019" -A x64'
+            publish: true
+          - description: macOS / Xcode
+            os: macos-10.15
+            cmakeOptions: ""
+            publish: true
+          - description: Linux / GCC
+            os: ubuntu-20.04
+            cmakeOptions: "-D CMAKE_C_COMPILER=gcc-10 -D CMAKE_CXX_COMPILER=g++-10"
+            publish: true
+          - description: Linux / Clang
+            os: ubuntu-20.04
+            cmakeOptions: "-D CMAKE_C_COMPILER=clang-12 -D CMAKE_CXX_COMPILER=clang++-12"
+            publish: false
+    env:
+      BOOST_ROOT: ${{ github.workspace }}/lib/boost
+      BOOST_URL: https://sourceforge.net/projects/boost/files/boost/1.76.0/boost_1_76_0.tar.bz2/download
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+      - name: Restore Boost from cache
+        uses: actions/cache@v2
+        id: cache-boost
+        with:
+          path: ${{ env.BOOST_ROOT }}
+          key: ${{ env.BOOST_URL }}
+      - name: Download Boost
+        if: steps.cache-boost.outputs.cache-hit != 'true'
+        shell: bash
+        run: |
+          if [ "$RUNNER_OS" == "Windows" ]; then
+            # use forward slashes only
+            BOOST_ROOT=$(echo $BOOST_ROOT | sed 's/\\/\//g')
+          fi
+          mkdir -p $BOOST_ROOT
+          curl --insecure -L $BOOST_URL | tar -xj --strip-components=1 -C $BOOST_ROOT
+      - name: Build Rhubarb
+        shell: bash
+        run: |
+          JAVA_HOME=$JAVA_HOME_11_X64
+          mkdir build
+          cd build
+          cmake ${{ matrix.cmakeOptions }} ..
+          cmake --build . --config Release --target package
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v2
+        with:
+          name: binaries
+          path: build/*.zip
+      - name: Run tests
+        shell: bash
+        run: |
+          if [ "$RUNNER_OS" == "Windows" ]; then
+            ./build/rhubarb/Release/runTests.exe
+          else
+            ./build/rhubarb/runTests
+          fi
+  release:
+    needs: build
+    runs-on: ubuntu-latest
+    if: startsWith(github.ref, 'refs/tags/v')
+    steps:
+      - name: Download artifacts
+        uses: actions/download-artifact@v2
+        with:
+          name: binaries
+      - name: Create GitHub release draft
+        uses: softprops/action-gh-release@v1
+        with:
+          draft: true
+          files: "*.zip"
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 260dc8f..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,42 +0,0 @@
-language: cpp
-
-sudo: required
-dist: trusty
-group: deprecated-2017Q4
-
-matrix:
-  include:
-    - os: linux
-      compiler: gcc
-      before_install:
-        - sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
-        - sudo apt-get -q update
-      install:
-        - sudo apt-get -y install g++-5
-        - sudo apt-get -y install libboost-all-dev
-      script:
-        - mkdir build
-        - cd build
-        - cmake -DCMAKE_CXX_COMPILER=g++-5 ..
-        - cmake --build . --config Release --target package
-        - ./rhubarb/runTests
-    - os: osx
-      osx_image: xcode7.3
-      script:
-        - mkdir build
-        - cd build
-        - cmake ..
-        - cmake --build . --config Release --target package
-        - ./rhubarb/runTests
-deploy:
-  # Deploy to GitHub releases
-  provider: releases
-  api_key: $GITHUB_OAUTH_TOKEN
-  file_glob: true
-  file: "./rhubarb-lip-sync-*.zip"
-  skip_cleanup: true
-  on:
-    tags: true
-  tag_name: $TRAVIS_TAG
-  name: $TRAVIS_COMMIT_MESSAGE
-  draft: true
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 13516a8..d13260d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 ## Unreleased
 
 * **Changed** Rhubarb Lip Sync for Spine so that it works with any modern JRE ([issue #97](https://github.com/DanielSWolf/rhubarb-lip-sync/issues/97))
+* **Changed** Windows build from 32 bit to 64 bit ([issue #98](https://github.com/DanielSWolf/rhubarb-lip-sync/issues/98))
 
 ## Version 1.10.0
 
diff --git a/README.adoc b/README.adoc
index f9c0645..6041ba5 100644
--- a/README.adoc
+++ b/README.adoc
@@ -9,8 +9,7 @@
 :X: Ⓧ
 
 image:https://img.shields.io/twitter/follow/RhubarbLipSync.svg?style=social&label=Follow["Twitter", link="https://twitter.com/RhubarbLipSync"]
-image:https://img.shields.io/appveyor/ci/DanielSWolf/rhubarb-lip-sync/master.svg?label=Windows%20build["Windows build status", link="https://ci.appveyor.com/project/DanielSWolf/rhubarb-lip-sync"]
-image:https://img.shields.io/travis/DanielSWolf/rhubarb-lip-sync/master.svg?label=OS%20X%20/%20Linux%20build["OS X / Linux build status", link="https://travis-ci.org/DanielSWolf/rhubarb-lip-sync"]
+image:https://img.shields.io/github/workflow/status/DanielSWolf/rhubarb-lip-sync/ci["Build status"]
 
 ---
 
diff --git a/rhubarb/CMakeLists.txt b/rhubarb/CMakeLists.txt
index c2981e5..0e20ed3 100644
--- a/rhubarb/CMakeLists.txt
+++ b/rhubarb/CMakeLists.txt
@@ -1,28 +1,19 @@
-cmake_minimum_required(VERSION 3.2)
+cmake_minimum_required(VERSION 3.10)
 
 include("../appInfo.cmake")
 
 # Support legacy OS X versions
-set(CMAKE_OSX_DEPLOYMENT_TARGET "10.8" CACHE STRING "Minimum OS X deployment version")
+set(CMAKE_OSX_DEPLOYMENT_TARGET "10.10" CACHE STRING "Minimum OS X deployment version")
 
 project(${appName})
 
 # Enable C++17
-if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "AppleClang")
-	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++17")
-elseif("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
-	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /std:c++17")
-endif()
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 # Enable POSIX threads
-if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
-	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread -lpthread")
-endif()
-
-# Make sure Xcode uses libc++ instead of libstdc++, allowing us to use the C++14 standard library prior to OS X 10.9
-if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "AppleClang")
-	add_compile_options(-stdlib=libc++)
-	set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -stdlib=libc++")
+if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
+	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread")
 endif()
 
 # Use static run-time