diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..ac4fbf5
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,40 @@
+name: CI
+on:
+  pull_request:
+  push:
+
+jobs:
+  main:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - elixir: '1.18'
+            erlang: '27.2.2'
+            lint: true
+          - elixir: '1.17'
+            erlang: '26.2.5.7'
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/cache@v4
+        if: ${{ ! matrix.lint }}
+        with:
+          path: |
+            _build
+            deps
+          key: ${{ runner.os }}-${{ matrix.elixir }}-${{ matrix.erlang }}-${{ hashFiles('mix.lock') }}
+      - uses: erlef/setup-beam@v1
+        with:
+          otp-version: ${{ matrix.erlang }}
+          elixir-version: ${{ matrix.elixir }}
+      - run: mix deps.get --check-locked
+      - run: mix format --check-formatted
+        if: ${{ matrix.lint }}
+      - run: mix deps.unlock --check-unused
+        if: ${{ matrix.lint }}
+      - run: mix compile
+        if: ${{ ! matrix.lint }}
+      - run: mix compile --warnings-as-errors
+        if: ${{ matrix.lint }}
+      - run: mix test