diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 75c053b..7b145d4 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -13,6 +13,7 @@ jobs:
     strategy:
       matrix:
         php: [7.4, 8.0, 8.1, 8.2]
+        symfony-version: [4.4.*, 5.4.*]
         composer-flags: ['', '--prefer-lowest']
       fail-fast: true
     steps:
@@ -23,6 +24,7 @@ jobs:
         with:
           php-version: ${{ matrix.php }}
           coverage: none
+          tools: flex
 
       - name: Get composer cache directory
         id: composer-cache
@@ -36,6 +38,8 @@ jobs:
           restore-keys: ${{ runner.os }}-composer-
 
       - name: Install dependencies
+        env:
+          SYMFONY_REQUIRE: ${{ matrix.symfony-version }}
         run: composer update --prefer-dist --no-interaction ${{ matrix.composer-flags }}
 
       - run: make tests