diff --git a/requirements.txt b/requirements.txt
index 5f0ea24958..b6f48112d1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ claude-agent-sdk>=0.1.30
 httpx==0.28.1
 imbalanced-learn==0.14.1
 langchain==1.2.10
-langchain-anthropic==1.3.4
+langchain-anthropic==1.3.5
 langchain-classic==1.0.3
 langchain-community==0.4.1
 langchain-google-genai==4.2.1