diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..264d53c
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,48 @@
+name: CI
+
+on:
+  push:
+    branches: [master, main]
+  pull_request:
+    branches: [master, main]
+
+jobs:
+  test:
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+        nim-version: ['2.2.4', 'stable']
+
+    runs-on: ${{ matrix.os }}
+    name: ${{ matrix.os }} / Nim ${{ matrix.nim-version }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Nim
+        uses: jiro4989/setup-nim-action@v2
+        with:
+          nim-version: ${{ matrix.nim-version }}
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Cache nimble packages
+        uses: actions/cache@v4
+        with:
+          path: ~/.nimble
+          key: ${{ runner.os }}-nimble-${{ matrix.nim-version }}-${{ hashFiles('*.nimble') }}
+          restore-keys: |
+            ${{ runner.os }}-nimble-${{ matrix.nim-version }}-
+            ${{ runner.os }}-nimble-
+
+      - name: Install dependencies
+        run: nimble install -y --depsOnly
+
+      - name: Build
+        run: nimble build -y
+
+      - name: Run allocation tests
+        run: nimble test_alloc -y
+
+      - name: Run FFI context tests
+        run: nimble test_ffi -y