diff --git a/.github/workflows/elixir.yml b/.github/workflows/elixir.yml
index 687be99..1b3dbc5 100644
--- a/.github/workflows/elixir.yml
+++ b/.github/workflows/elixir.yml
@@ -1,6 +1,5 @@
 name: CI
 on:
-  - push
   - pull_request
 env:
   OTP_VERSION: "24.0"
diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
new file mode 100644
index 0000000..d07961d
--- /dev/null
+++ b/.github/workflows/nix.yml
@@ -0,0 +1,29 @@
+name: CI
+on:
+  - push
+jobs:
+  linux:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: cachix/install-nix-action@v27
+        with:
+          github_access_token: ${{ secrets.GITHUB_TOKEN }}
+      - run: nix build
+      - run: nix flake check
+      - run: mix deps.get
+      - run: mix compile --warnings-as-errors
+      - run: mix test --trace
+
+  macos:
+    runs-on: macos-11
+    steps:
+      - uses: actions/checkout@v4
+      - uses: cachix/install-nix-action@v27
+        with:
+          github_access_token: ${{ secrets.GITHUB_TOKEN }}
+      - run: nix build
+      - run: nix flake check
+      - run: mix deps.get
+      - run: mix compile --warnings-as-errors
+      - run: mix test --trace