diff --git a/samples/durable-task-sdks/python/arXiv_research_agent/requirements.txt b/samples/durable-task-sdks/python/arXiv_research_agent/requirements.txt
index 1cf709bf..15e1744d 100644
--- a/samples/durable-task-sdks/python/arXiv_research_agent/requirements.txt
+++ b/samples/durable-task-sdks/python/arXiv_research_agent/requirements.txt
@@ -23,7 +23,7 @@ python-dotenv>=1.2.2
 rich>=15.0.0
 
 # Pydantic for data validation (included with FastAPI)
-pydantic>=2.13.3
+pydantic>=2.13.5
 
 # Testing dependencies
 pytest>=9.0.3