diff --git a/src/ontogpt/engines/topic_classifier_engine.py b/src/ontogpt/engines/topic_classifier_engine.py
index 07f660ecd..dd8e5ba28 100644
--- a/src/ontogpt/engines/topic_classifier_engine.py
+++ b/src/ontogpt/engines/topic_classifier_engine.py
@@ -1,7 +1,6 @@
 """Topic classifier engine."""
 
 from dataclasses import dataclass
-from typing import List
 
 from ontogpt.engines.knowledge_engine import KnowledgeEngine