diff --git a/.github/workflows/test-application.yaml b/.github/workflows/test-application.yaml
index 979b9d5..eabcf12 100644
--- a/.github/workflows/test-application.yaml
+++ b/.github/workflows/test-application.yaml
@@ -36,6 +36,9 @@ jobs:
                     - php-version: "8.0"
                       symfony-require: "6.0.*"
 
+                    - php-version: "8.1"
+                      symfony-require: "6.0.*"
+
         steps:
             - name: "Checkout project"
               uses: "actions/checkout@v2"
diff --git a/src/PagedRouteCollection.php b/src/PagedRouteCollection.php
index 02bf30a..02ab8df 100644
--- a/src/PagedRouteCollection.php
+++ b/src/PagedRouteCollection.php
@@ -118,10 +118,8 @@ public function rewind(): void
 
     /**
      * Gets the number of Routes in this collection.
-     *
-     * @return int The number of routes
      */
-    public function count()
+    public function count(): int
     {
         return $this->provider->getRoutesCount();
     }