diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index a332546..1d1b6e4 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,78 +1,93 @@
 on:
-    - pull_request
-    - push
+  - pull_request
+  - push
 
 name: build
 
 jobs:
-    tests:
-        name: PHP ${{ matrix.php-version }}
-        runs-on: ubuntu-latest
-        env:
-            extensions: curl, mbstring, dom
-            key: cache-v1
-
-        strategy:
-            matrix:
-                php-version:
-                    - "7.4"
-                    - "8.0"
-
-        steps:
-            -   name: Checkout
-                uses: actions/checkout@v2
-
-            -   name: Setup cache environment
-                id: cache-env
-                uses: shivammathur/cache-extensions@v1
-                with:
-                    php-version: ${{ matrix.php-version }}
-                    extensions: ${{ env.extensions }}
-                    key: ${{ env.key }}
-
-            -   name: Cache extensions
-                uses: actions/cache@v2
-                with:
-                    path: ${{ steps.cache-env.outputs.dir }}
-                    key: ${{ steps.cache-env.outputs.key }}
-                    restore-keys: ${{ steps.cache-env.outputs.key }}
-
-            -   name: Setup PHP
-                uses: shivammathur/setup-php@v2
-                with:
-                    php-version: ${{ matrix.php-version }}
-                    extensions: ${{ env.extensions }}
-                    ini-values: date.timezone='UTC'
-                    coverage: pcov
-
-            -   name: Determine composer cache directory
-                run: echo "::set-env name=COMPOSER_CACHE_DIR::$(composer config cache-dir)"
-
-            -   name: Cache dependencies installed with composer
-                uses: actions/cache@v1
-                with:
-                    path: ${{ env.COMPOSER_CACHE_DIR }}
-                    key: php-${{ matrix.php-version }}-composer-${{ hashFiles('**/composer.json') }}
-                    restore-keys: php-${{ matrix.php-version }}-composer-
-
-            -   name: Install dependencies with composer php 7.4
-                if: matrix.php-version == '7.4'
-                run: composer update --prefer-dist --no-interaction --no-progress --optimize-autoloader
-
-            -   name: Install dependencies with composer php 8.0
-                if: matrix.php-version == '8.0'
-                run: composer update --ignore-platform-reqs --prefer-dist --no-interaction --no-progress --optimize-autoloader
-
-            -   name: PHPUnit run with coverage on PHP 7.4
-                if: matrix.php-version == '7.4'
-                run: vendor/bin/phpunit --coverage-clover=coverage.clover
-
-            -   name: PHPUnit run without coverage on PHP 8.0
-                if: matrix.php-version == '8.0'
-                run: vendor/bin/phpunit
-
-            -   name: Code coverage on PHP 7.4
-                if: matrix.php-version == '7.4'
-                run: |
-                    wget https://scrutinizer-ci.com/ocular.phar
-                    php ocular.phar code-coverage:upload --format=php-clover coverage.clover
+  tests:
+    name: PHP ${{ matrix.php-version }}-${{ matrix.os }}
+
+    runs-on: ${{ matrix.os }}
+
+    env:
+      extensions: curl, mbstring, dom
+      key: cache-v1
+
+    strategy:
+      matrix:
+        os:
+          - ubuntu-latest
+          - windows-latest
+
+        php-version:
+          - "7.4"
+          - "8.0"
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Setup cache environment
+        id: cache-env
+        uses: shivammathur/cache-extensions@v1
+        with:
+          php-version: ${{ matrix.php-version }}
+          extensions: ${{ env.extensions }}
+          key: ${{ env.key }}
+
+      - name: Cache extensions
+        uses: actions/cache@v2
+        with:
+          path: ${{ steps.cache-env.outputs.dir }}
+          key: ${{ steps.cache-env.outputs.key }}
+          restore-keys: ${{ steps.cache-env.outputs.key }}
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php-version }}
+          extensions: ${{ env.extensions }}
+          ini-values: date.timezone='UTC'
+          coverage: pcov
+
+      - name: Determine composer cache directory on Linux
+        if: matrix.os == 'ubuntu-latest'
+        run: echo "::set-env name=COMPOSER_CACHE_DIR::$(composer config cache-dir)"
+
+      - name: Determine composer cache directory on Windows
+        if: matrix.os == 'windows-latest'
+        run: ECHO "::set-env name=COMPOSER_CACHE_DIR::~\AppData\Local\Composer"
+
+      - name: Cache dependencies installed with composer
+        uses: actions/cache@v1
+        with:
+          path: ${{ env.COMPOSER_CACHE_DIR }}
+          key: php-${{ matrix.php-version }}-composer-${{ hashFiles('**/composer.json') }}
+          restore-keys: php-${{ matrix.php-version }}-composer-
+
+      - name: Install dependencies with composer php 7.4
+        if: matrix.php-version == '7.4'
+        run: composer update --prefer-dist --no-interaction --no-progress --optimize-autoloader
+
+      - name: Install dependencies with composer php 8.0
+        if: matrix.php-version == '8.0'
+        run: composer update --ignore-platform-reqs --prefer-dist --no-interaction --no-progress --optimize-autoloader
+
+      - name: PHPUnit run with coverage on Linux PHP 7.4
+        if: matrix.os == 'ubuntu-latest' && matrix.php-version == '7.4'
+        run: vendor/bin/phpunit --coverage-clover=coverage.clover
+
+      - name: PHPUnit run without coverage on Linux PHP 8.0
+        if: matrix.os == 'ubuntu-latest' && matrix.php-version == '8.0'
+        run: vendor/bin/phpunit
+
+      - name: PHPUnit run without coverage on Windows
+        if: matrix.os == 'windows-latest'
+        run: vendor/bin/phpunit
+
+      - name: Code coverage scrutinizer on Linux PHP 7.4
+        if: matrix.os == 'ubuntu-latest' && matrix.php-version == '7.4'
+        run: |
+          wget https://scrutinizer-ci.com/ocular.phar
+          php ocular.phar code-coverage:upload --format=php-clover coverage.clover
diff --git a/.github/workflows/static.yml b/.github/workflows/static.yml
index cfb3329..8f6c367 100644
--- a/.github/workflows/static.yml
+++ b/.github/workflows/static.yml
@@ -5,7 +5,7 @@ on:
 name: static
 
 jobs:
-  mutation:
+  static:
     name: PHP ${{ matrix.php-version }}-${{ matrix.os }}
 
     runs-on: ${{ matrix.os }}