diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 0000000..f97c07a
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,20 @@
+name: phmap CI
+
+on:
+  push:
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        configs: [Release, Debug]
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2.0.0
+    - name: Build and test
+      mkdir build && cd build && cmake -DPHMAP_BUILD_TESTS=ON -DPHMAP_BUILD_EXAMPLES=ON -DCMAKE_CXX_COMPILER=${COMPILER} -DCXXFLAGS="${CXX_FLAGS}" .. && cmake --build . && make test
+