diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index c8995972397b0b4eee5e00b527d99897cf39050c..7f552836fc7d6deacc115a3ae3c179be45dccb21 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -4,7 +4,60 @@ on:
   - "push"
 
 jobs:
-  unit-tests:
+  macos-unit-tests:
+    runs-on: "macos-latest"
+    strategy:
+      matrix:
+        python-version:
+          - "2.7"
+
+      # Get tags not fetched by the checkout action, needed for auto-versioning.
+    - name: "Finish checkout"
+      run: |
+        git fetch --tags
+
+    - name: "Upgrade Pip"
+      run: |
+        python -m pip install -v --upgrade pip
+
+    - name: "Install CI Dependencies"
+      run: |
+        python -m pip install -v wheel coverage
+
+    - name: "Install Test Dependencies"
+      run: |
+        python -m pip install -v -r test-requirements.txt
+
+    - name: "Install ZKAPAuthorizer"
+      run: |
+        python -m pip install -v ./
+
+    - name: "Dump Python Environment"
+      run: |
+        pip freeze
+
+    - name: "Run Tests"
+      env:
+        MAGIC_FOLDER_HYPOTHESIS_PROFILE: "ci"
+      run: |
+        python -m coverage run --debug=config -m twisted.trial _zkapauthorizer
+
+    - name: "Convert Coverage"
+      run: |
+        echo "Files:"
+        dir
+        echo "Combining"
+        coverage combine
+        echo "Reporting"
+        coverage report
+        echo "Converting to XML"
+        coverage xml
+
+    - uses: codecov/codecov-action@v1
+      with:
+        file: "./coverage.xml"
+
+  windows-unit-tests:
     runs-on: "windows-latest"
     strategy:
       matrix: