diff --git a/requirements.txt b/requirements.txt
index 8cb161a..39f43a2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ semantic-kernel
 langgraph
 langchain==1.0.2
 langchain_openai==1.0.1
-pydantic-ai==1.0.8
+pydantic-ai==1.56.0
 llama-index
 llama-index-llms-azure-openai
 llama-index-llms-openai-like