diff --git a/src/ResultPrinter/UI.php b/src/ResultPrinter/UI.php
index 5ab8f06..c7c6e92 100644
--- a/src/ResultPrinter/UI.php
+++ b/src/ResultPrinter/UI.php
@@ -93,6 +93,11 @@ public function addIncompleteTest(\PHPUnit\Framework\Test $test, \Throwable $e,
         $this->lastTestFailed = true;
     }
 
+    public function addRiskyTest(\PHPUnit\Framework\Test $test, \Throwable $e, float $time) : void
+    {
+        $this->lastTestFailed = true;
+    }
+
     public function addSkippedTest(\PHPUnit\Framework\Test $test, \Throwable $e, float $time) : void
     {
         $this->lastTestFailed = true;