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 dbb590a..b4a4e2c 100644
--- a/samples/durable-task-sdks/python/arXiv_research_agent/requirements.txt
+++ b/samples/durable-task-sdks/python/arXiv_research_agent/requirements.txt
@@ -1,7 +1,7 @@
 # arXiv Research Agent - Python Dependencies
 
 # DurableTask SDK for Azure
-durabletask-azuremanaged>=1.3.0
+durabletask-azuremanaged>=1.9.0
 
 # OpenAI SDK (Responses API)
 openai>=2.44.0