diff --git a/crawlers.py b/crawlers.py
index 9c5a5cd73..a587cd092 100644
--- a/crawlers.py
+++ b/crawlers.py
@@ -139,7 +139,8 @@ def blocked_user_agent(calling_domain: str, agent_str: str,
             'petalbot', 'ai2bot', 'allenai', 'firecrawl', 'friendlycrawler',
             'googleother', 'icc-crawler', 'scrapy', 'timpibot',
             'velenpublic', 'webzio-extended', 'cohere-ai', 'facebookexternal',
-            'img2dataset'
+            'img2dataset', 'isscyberriskcrawler', 'sidetrade', 'kangaroo',
+            'iaskspider'
         )
         for bot_str in llm_bot_strings:
             if bot_str in agent_str_lower: