diff --git a/Assets/02.Scripts/Prop/Rockfall.cs b/Assets/02.Scripts/Prop/Rockfall.cs
index f285a9527..1ac9ceb96 100644
--- a/Assets/02.Scripts/Prop/Rockfall.cs
+++ b/Assets/02.Scripts/Prop/Rockfall.cs
@@ -75,7 +75,7 @@ namespace BlueWater
             _startDistance = _raycastHit.distance;
         }
 
-        private void Update()
+        private void FixedUpdate()
         {
             if (!Physics.Raycast(transform.position, Vector3.down, out _raycastHit, 10f, _groundLayer))
             {