diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..34f92c1
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,45 @@
+name: CI
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+jobs:
+  test:
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        rust: [stable, beta, nightly]
+        include:
+          - os: windows-latest
+            rust: stable-x86_64-pc-windows-gnu
+          - os: windows-latest
+            rust: nightly-x86_64-pc-windows-gnu
+          - os: windows-latest
+            rust: stable-i686-pc-windows-msvc
+          - os: windows-latest
+            rust: nightly-i686-pc-windows-msvc
+          - os: windows-latest
+            rust: stable-i686-pc-windows-gnu
+          - os: windows-latest
+            rust: nightly-i686-pc-windows-gnu
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          toolchain: ${{ matrix.rust }}
+      - run: cargo build
+      - run: cargo build --features termination
+      - run: cargo test
+      - run: cargo test --features termination
+
+  fmt:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+      - run: cargo fmt --check
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 9ef23f3..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,19 +0,0 @@
-language: rust
-cache: cargo
-rust:
-  - stable
-  - beta
-  - nightly
-env:
-matrix:
-  include:
-    - rust: stable
-      env: SYNTAX_CHECK=1
-      install:
-        - rustup component add rustfmt
-      script:
-        - cargo fmt -- --check
-
-notifications:
-    email: false
-sudo: false
diff --git a/appveyor.yml b/appveyor.yml
deleted file mode 100644
index cc9ed3f..0000000
--- a/appveyor.yml
+++ /dev/null
@@ -1,48 +0,0 @@
-# Original version from https://github.com/starkat99/appveyor-rust
-
-os: Visual Studio 2015
-
-environment:
-  matrix:
-    - channel: stable
-      target: x86_64-pc-windows-msvc
-    - channel: stable
-      target: i686-pc-windows-msvc
-    - channel: beta
-      target: x86_64-pc-windows-msvc
-    - channel: beta
-      target: i686-pc-windows-msvc
-    - channel: nightly
-      target: x86_64-pc-windows-msvc
-    - channel: nightly
-      target: i686-pc-windows-msvc
-    - channel: stable
-      target: x86_64-pc-windows-gnu
-    - channel: stable
-      target: i686-pc-windows-gnu
-    - channel: beta
-      target: x86_64-pc-windows-gnu
-    - channel: beta
-      target: i686-pc-windows-gnu
-    - channel: nightly
-      target: x86_64-pc-windows-gnu
-    - channel: nightly
-      target: i686-pc-windows-gnu
-
-matrix:
-  allow_failures:
-    - channel: nightly
-
-install:
-  - appveyor-retry appveyor DownloadFile https://win.rustup.rs/ -FileName rustup-init.exe
-  - rustup-init -yv --default-toolchain %channel% --default-host %target%
-  - set PATH=%PATH%;%USERPROFILE%\.cargo\bin
-  - rustc -vV
-  - cargo -vV
-
-# 'cargo test' takes care of building for us, so disable Appveyor's build stage. This prevents
-# the "directory does not contain a project or solution file" error.
-build: false
-
-test_script:
-  - cargo test --verbose %cargoflags%