diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 47b27e8..1c539ef 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -13,7 +13,7 @@ jobs:
 
     strategy:
       matrix:
-        php-version: [ '8.3', '8.4' ]
+        php-version: [ '8.3', '8.4', '8.5' ]
 
     name: Run tests on PHP v${{ matrix.php-version }}
 
@@ -41,4 +41,4 @@ jobs:
         run: composer install --no-interaction --prefer-dist --no-progress
 
       - name: Run phpunit tests
-        run: composer test
\ No newline at end of file
+        run: composer test
diff --git a/test/Unit/System/File/FileTest.php b/test/Unit/System/File/FileTest.php
index b9736a2..ec479d2 100644
--- a/test/Unit/System/File/FileTest.php
+++ b/test/Unit/System/File/FileTest.php
@@ -192,9 +192,9 @@ public function testGetPosition(): void
      */
     public function testThrowsExceptionOnImpossibleGetPosition(): void
     {
-        $element = $this->createElement("/dev/null");
+        $element = $this->createElement("php://stdin");
         $this->expectException(TellException::class);
-        $this->expectExceptionMessage("Could not get file position (/dev/null)");
+        $this->expectExceptionMessage("Could not get file position (php://stdin)");
         $element->getPosition();
     }
 
@@ -461,4 +461,4 @@ public function testSocketThrowExceptionIncludesPreviousPhpError(): void
         $this->expectExceptionMessage("Test: warning (" . $this->getTmpPath() . "/test)");
         $throwExceptionMethod->invoke($element, "Test");
     }
-}
\ No newline at end of file
+}