diff --git a/samples/durable-task-sdks/python/agent-directed-workflows/requirements.txt b/samples/durable-task-sdks/python/agent-directed-workflows/requirements.txt
index 1f7e39f..8a9aee0 100644
--- a/samples/durable-task-sdks/python/agent-directed-workflows/requirements.txt
+++ b/samples/durable-task-sdks/python/agent-directed-workflows/requirements.txt
@@ -1,7 +1,7 @@
 durabletask>=1.4.0
 durabletask-azuremanaged>=1.4.0
 fastapi>=0.136.1
-uvicorn>=0.49.0
+uvicorn>=0.52.4
 redis>=8.0.1
 openai>=2.44.0
 azure-identity>=1.25.3
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..80cf51f 100644
--- a/samples/durable-task-sdks/python/arXiv_research_agent/requirements.txt
+++ b/samples/durable-task-sdks/python/arXiv_research_agent/requirements.txt
@@ -11,7 +11,7 @@ azure-identity>=1.25.3
 
 # FastAPI for REST API
 fastapi>=0.136.1
-uvicorn>=0.49.0
+uvicorn>=0.52.4
 
 # HTTP client
 httpx>=0.28.1