diff --git a/src/gatekeeper.py b/src/gatekeeper.py
index 05a8f14..660b19d 100644
--- a/src/gatekeeper.py
+++ b/src/gatekeeper.py
@@ -101,8 +101,10 @@ class ContextGatekeeper:
         # 如需进一步裁剪，可在 Block 内部按句子级别筛选
 
         # 7. 更新活跃话题
-        if not switched and query_anchors:
+        if query_anchors:
             self._active_topic = (query_anchors, self.anchor_extractor._idf_cache)
+        if not switched and query_anchors:
+            self.topic_gate.update_active_topic(query_anchors, self.anchor_extractor._idf_cache)
 
         # 8. 格式化为输出
         result = [