diff --git a/backend/routes/clustering.py b/backend/routes/clustering.py
index 1836900..1a305ab 100644
--- a/backend/routes/clustering.py
+++ b/backend/routes/clustering.py
@@ -430,8 +430,10 @@ async def get_clusters(
     """
     if force:
         with _LOCK:
-            _CACHE["status"] = "idle"
-            _CACHE["ts"]     = 0.0
+            _CACHE["status"]      = "idle"
+            _CACHE["ts"]          = 0.0
+            _CACHE["result"]      = None
+            _CACHE["cluster_ips"] = {}
 
     _maybe_trigger(k, hours, sensitivity)