diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..9783241
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,74 @@
+name: CI
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["main"]
+  workflow_dispatch:
+
+env:
+  MIX_ENV: test
+
+jobs:
+  test_macos:
+    name: Elixir ${{ matrix.pair.elixir }} OTP ${{ matrix.pair.otp }} (macOS)
+    runs-on: macos-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        pair:
+          - elixir: "1.13"
+            otp: "24.3.4.10"
+          - elixir: "1.17"
+            otp: "27.0.1"
+    steps:
+      - uses: actions/checkout@v4
+      - name: Generate .tool-versions file
+        run: |
+          echo "elixir ${{ matrix.pair.elixir }}" >> .tool-versions
+          echo "erlang ${{ matrix.pair.otp }}" >> .tool-versions
+          cat .tool-versions
+      - uses: asdf-vm/actions/install@v3
+      - name: Install Hex package manager
+        run: mix local.hex --force
+      - name: Install dependencies
+        run: mix deps.get
+      - run: mix test
+  test_ubuntu:
+    name: Elixir ${{ matrix.pair.elixir }} OTP ${{ matrix.pair.otp }} (Ubuntu)
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - pair:
+              elixir: "1.13"
+              otp: "24.3.4.10"
+          - pair:
+              elixir: "1.17"
+              otp: "27.0.1"
+            lint: lint
+    steps:
+      - uses: actions/checkout@v4
+      - uses: erlef/setup-beam@main
+        with:
+          otp-version: ${{ matrix.pair.otp }}
+          elixir-version: ${{ matrix.pair.elixir }}
+          version-type: strict
+      - uses: actions/cache@v4
+        with:
+          path: deps
+          key: mix-deps-${{ hashFiles('**/mix.lock') }}
+      - 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 deps.compile
+      - run: mix compile --warnings-as-errors
+        if: ${{ matrix.lint }}
+      - run: mix test
+        if: ${{ ! matrix.lint }}
+      - run: mix test --warnings-as-errors
+        if: ${{ matrix.lint }}
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
deleted file mode 100644
index 199a9c3..0000000
--- a/.github/workflows/main.yml
+++ /dev/null
@@ -1,53 +0,0 @@
-name: CI
-on:
-  pull_request:
-  push:
-    branches:
-      - main
-jobs:
-  test:
-    runs-on: ubuntu-20.04
-    env:
-      MIX_ENV: test
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          - pair:
-              elixir: "1.11"
-              otp: 22
-          - pair:
-              elixir: "1.14"
-              otp: 25
-            lint: lint
-    steps:
-      - uses: actions/checkout@v3
-
-      - uses: erlef/setup-beam@v1
-        with:
-          otp-version: ${{matrix.pair.otp}}
-          elixir-version: ${{matrix.pair.elixir}}
-
-      - uses: actions/cache@v3
-        with:
-          path: deps
-          key: ${{ runner.os }}-mix-${{matrix.pair.elixir}}-${{matrix.pair.otp}}-${{ hashFiles('**/mix.lock') }}-v1
-
-      - run: mix deps.get
-
-      - run: mix format --check-formatted
-        if: ${{ matrix.lint }}
-
-      - run: mix deps.unlock --check-unused
-        if: ${{ matrix.lint }}
-
-      - run: mix deps.compile
-
-      - run: mix compile --warnings-as-errors
-        if: ${{ matrix.lint }}
-
-      - run: mix test
-        if: ${{ ! matrix.lint }}
-
-      - run: mix test --warnings-as-errors
-        if: ${{ matrix.lint }}
diff --git a/README.md b/README.md
index 824bf57..b123a8c 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # DartSass
 
-[![CI](https://github.com/CargoSense/dart_sass/actions/workflows/main.yml/badge.svg)](https://github.com/CargoSense/dart_sass/actions/workflows/main.yml)
+[![CI](https://github.com/CargoSense/dart_sass/actions/workflows/ci.yml/badge.svg)](https://github.com/CargoSense/dart_sass/actions/workflows/ci.yml)
 
 Mix tasks for installing and invoking [sass](https://github.com/sass/dart-sass/).