diff --git a/requirements.txt b/requirements.txt
index 133de68..a6c34ed 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-anthropic==0.116.0
+anthropic==1.9.0
 google-genai==2.10.0
 openai==2.44.0
 pre-commit==4.6.0