diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index f9cb8ee351d..a3378b794f7 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -17,7 +17,7 @@ jobs:
         strategy:
             fail-fast: false
             matrix:
-                os: [ubuntu-latest, windows-latest]
+                os: [ubuntu-latest]
                 php-versions: ['8.4', '8.5']
 
         runs-on: ${{ matrix.os }}
diff --git a/.github/workflows/tests_windows.yaml b/.github/workflows/tests_windows.yaml
new file mode 100644
index 00000000000..089b1edd2d1
--- /dev/null
+++ b/.github/workflows/tests_windows.yaml
@@ -0,0 +1,40 @@
+name: Tests (Windows)
+
+on:
+    schedule:
+        # every 3 hours
+        - cron: '0 */3 * * *'
+    workflow_dispatch: null
+
+
+
+env:
+    # see https://github.com/composer/composer/issues/9368#issuecomment-718112361
+    COMPOSER_ROOT_VERSION: "dev-main"
+
+jobs:
+    tests:
+        strategy:
+            fail-fast: false
+            matrix:
+                php-versions: ['8.4', '8.5']
+
+        runs-on: windows-latest
+        timeout-minutes: 4
+
+        name: PHP ${{ matrix.php-versions }} tests (windows-latest)
+        steps:
+            -   uses: actions/checkout@v5
+
+            -
+                uses: shivammathur/setup-php@v2
+                with:
+                    php-version: ${{ matrix.php-versions }}
+                    coverage: none
+                    # to display warning when assert() is called, eg: on direct getArgs() on CallLike
+                    # and check against first class callable strlen(...)
+                    ini-values: zend.assertions=1
+
+            -   uses: "ramsey/composer-install@v4"
+
+            -   run: vendor/bin/phpunit --colors