diff --git a/.github/workflows/php.yml b/.github/workflows/php.yml
index 841bf16..d4b833c 100644
--- a/.github/workflows/php.yml
+++ b/.github/workflows/php.yml
@@ -65,3 +65,52 @@ jobs:
 
     - name: Run test suite
       run: composer run-script tests
+
+  bdf_form_compatibility:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        form-versions:
+          - package: '1.0'
+            php: '8.0'
+          - package: '1.1'
+            php: '8.0'
+          - package: '1.2'
+            php: '8.0'
+          - package: '1.3'
+            php: '8.0'
+          - package: '1.4'
+            php: '8.0'
+          - package: '1.6'
+            php: '8.0'
+          - package: '1.7'
+            php: '8.4'
+          - package: '2.0'
+            php: '8.4'
+    name: Compatibility with b2pweb/bdf-form ${{ matrix.form-versions.package }}
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set Timezone
+        uses: szenius/set-timezone@v1.0
+        with:
+          timezoneLinux: "Europe/Paris"
+
+      - name: Install PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.form-versions.php }}
+          extensions: json
+          ini-values: date.timezone=Europe/Paris
+
+      - name: Set bdf-form version
+        run: |
+          sed -i "s/\"b2pweb\/bdf-form\": \".*\"/\"b2pweb\/bdf-form\": \"~${{ matrix.form-versions.package }}.0\"/g" composer.json
+
+      - name: Install dependencies
+        run: composer install --prefer-dist --no-progress
+
+      - name: Run test suite
+        run: composer run-script tests
diff --git a/Tests/Forms/MyConstraintValidator.php b/Tests/Forms/MyConstraintValidator.php
index 59719d3..af78342 100644
--- a/Tests/Forms/MyConstraintValidator.php
+++ b/Tests/Forms/MyConstraintValidator.php
@@ -19,7 +19,7 @@ public function __construct(A $a)
         $this->a = $a;
     }
 
-    public function validate($value, Constraint $constraint)
+    public function validate($value, Constraint $constraint): void
     {
         self::$injectedParameter = $this->a;
     }
diff --git a/composer.json b/composer.json
index bb70106..575ac59 100755
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
   "minimum-stability": "dev",
   "require": {
     "php": "~7.2 | ~8.0",
-    "b2pweb/bdf-form": "~1.0",
+    "b2pweb/bdf-form": "~1.0|~2.0",
     "symfony/config": "~5.0|~6.0|~7.0",
     "symfony/dependency-injection": "~5.0|~6.0|~7.0",
     "symfony/framework-bundle": "~5.0|~6.0|~7.0"