diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..4b1e85a
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,73 @@
+---
+name: CI
+
+on:
+  pull_request:
+    branches:
+      - master
+    types:
+      - opened
+      - synchronize
+      - reopened
+  push:
+    branches:
+      - master
+
+concurrency:
+  group: "${{ github.workflow }}-${{ github.ref }}"
+  cancel-in-progress: true
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          # TODO: Win32 build cannot find OpenSSL
+          # - os: windows-latest
+          #   cmake_args: -A Win32
+          - os: windows-latest
+            cmake_args: -A x64
+          - os: macos-latest
+            build_target: macos
+            cmake_args: -DOPENSSL_ROOT_DIR=/usr/local/opt/openssl
+          - os: ubuntu-latest
+            cc: clang
+            cxx: clang++
+          - os: ubuntu-latest
+            cc: gcc
+            cxx: g++
+          - os: ubuntu-latest
+            cc: clang
+            cxx: clang++
+            cmake_args: -DUSE_MBEDTLS=ON
+            prebuild_cmd: sudo apt install -y libmbedtls-dev
+          - os: ubuntu-latest
+            cc: gcc
+            cxx: g++
+            cmake_args: -DUSE_MBEDTLS=ON
+            prebuild_cmd: sudo apt install -y libmbedtls-dev
+    runs-on: ${{ matrix.os }}
+    name: Build
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Prebuild
+        if: matrix.prebuild_cmd
+        run: |
+          eval "${{ matrix.prebuild_cmd }}"
+
+      - name: Build Debug
+        run: |
+          mkdir build_debug
+          cmake ${{ matrix.cmake_args }} -DCMAKE_BUILD_TYPE=Debug -B build_debug -S .
+          cmake --build build_debug --config Debug
+
+      - name: Build Release
+        run: |
+          mkdir build_release
+          cmake ${{ matrix.cmake_args }} -DCMAKE_BUILD_TYPE=Release -B build_release -S .
+          cmake --build build_release --config Release
diff --git a/.gitignore b/.gitignore
index 8be66fa..bc8390e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,8 @@
+.idea/
 limelight-common/ARM/
 limelight-common/Debug/
 Build/
+cmake-*/
 **/xcuserdata/
 limelight-common/Release/
 *.sdf
diff --git a/appveyor.yml b/appveyor.yml
deleted file mode 100644
index d588963..0000000
--- a/appveyor.yml
+++ /dev/null
@@ -1,48 +0,0 @@
-clone_depth: 1
-
-environment:
-  matrix:
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2022
-      CMAKE_ARGS: -A Win32
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2022
-      CMAKE_ARGS: -A x64
-    - APPVEYOR_BUILD_WORKER_IMAGE: macOS
-      BUILD_TARGET: macos
-      CMAKE_ARGS: -DOPENSSL_ROOT_DIR=/usr/local/opt/openssl
-    - APPVEYOR_BUILD_WORKER_IMAGE: Ubuntu2204
-      CC: clang
-      CXX: clang++
-    - APPVEYOR_BUILD_WORKER_IMAGE: Ubuntu2204
-      CC: gcc
-      CXX: g++
-    - APPVEYOR_BUILD_WORKER_IMAGE: Ubuntu2204
-      CC: clang
-      CXX: clang++
-      CMAKE_ARGS: -DUSE_MBEDTLS=ON
-      PREBUILD_CMD: sudo apt install -y libmbedtls-dev
-    - APPVEYOR_BUILD_WORKER_IMAGE: Ubuntu2204
-      CC: gcc
-      CXX: g++
-      CMAKE_ARGS: -DUSE_MBEDTLS=ON
-      PREBUILD_CMD: sudo apt install -y libmbedtls-dev
-
-before_build:
-  - 'git submodule update --init --recursive'
-  - sh: 'eval "$PREBUILD_CMD"'
-
-build_script:
-  - 'mkdir build_debug'
-  - 'cd build_debug'
-  - sh: 'cmake $CMAKE_ARGS -DCMAKE_BUILD_TYPE=Debug ..'
-  - cmd: 'cmake %CMAKE_ARGS% -DCMAKE_BUILD_TYPE=Debug ..'
-  - sh: 'cmake --build .'
-  - cmd: 'cmake --build . --config Debug'
-  - 'cd ..'
-  - 'mkdir build_release'
-  - 'cd build_release'
-  - sh: 'cmake $CMAKE_ARGS -DCMAKE_BUILD_TYPE=Release ..'
-  - cmd: 'cmake %CMAKE_ARGS% -DCMAKE_BUILD_TYPE=Release ..'
-  - sh: 'cmake --build .'
-  - cmd: 'cmake --build . --config Release'
-
-deploy: off