diff --git a/backend/requirements.txt b/backend/requirements.txt
index 0214abc..4efa40b 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -2,7 +2,7 @@ flask==3.0.0
 flask-cors==4.0.0
 flask-socketio==5.3.6
 paramiko==3.4.0
-anthropic>=0.40.0
+anthropic==0.45.0
 requests==2.31.0
 python-dotenv==1.0.0
 gevent==23.9.1