diff --git a/src/world/light/LightUpdate.php b/src/world/light/LightUpdate.php
index 45fa19df3..9570b8e03 100644
--- a/src/world/light/LightUpdate.php
+++ b/src/world/light/LightUpdate.php
@@ -114,6 +114,9 @@ abstract class LightUpdate{
 						$context->removalQueue->enqueue([$x, $y, $z, $oldLevel]);
 					}
 				}
+			}elseif($this->getEffectiveLight($x, $y, $z) > 0){ //outside the chunk (e.g. virtual sky light from y=256)
+				$context->spreadVisited[$blockHash] = true;
+				$context->spreadQueue->enqueue([$x, $y, $z]);
 			}
 		}
 		return $context;