diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..8a6697d
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,32 @@
+name: CI
+
+on:
+  push:
+    branches: [master, main]
+  # Runs on all pull requests once this workflow exists on master (default branch).
+  # Stacked PRs whose base branch predates this file may need master merged in
+  # before checks appear on downstream PRs (#5–#9).
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  build-test:
+    runs-on: windows-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: 10.0.x
+
+      - name: Build
+        run: dotnet build QuickShell.sln -c Release -p:Platform=x64 --verbosity minimal
+        shell: pwsh
+
+      - name: Test
+        run: dotnet test QuickShell.Core.Tests/QuickShell.Core.Tests.csproj -c Release -p:Platform=x64 --no-build --verbosity minimal
+        shell: pwsh