diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bfea19f..f199f83 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,10 +7,13 @@ jobs:
     runs-on: ubuntu-latest
     
     steps:
-    - uses: actions/checkout@v2
+    - name: Checkout code
+      uses: actions/checkout@v2
+    - name: Check Composer configuration
+      run: composer validate --strict
     - name: Install dependencies
       run: composer install
     - name: Start Redis
       uses: supercharge/redis-github-action@1.1.0
     - name: Run tests
-      run: phpunit
\ No newline at end of file
+      run: phpunit
diff --git a/composer.lock b/composer.lock
index 8a221e2..2895b75 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "5490f9d950e736c489a8814c07b7f580",
+    "content-hash": "b717375eb6a119696c1585c50589ddfc",
     "packages": [
         {
             "name": "brick/math",
@@ -5080,6 +5080,8 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": [],
-    "platform-dev": [],
+    "platform-dev": {
+        "ext-redis": "*"
+    },
     "plugin-api-version": "1.1.0"
 }