diff --git a/samples/client/petstore/python-tornado/requirements.txt b/samples/client/petstore/python-tornado/requirements.txt
index d0518ec800e9..cec98069a894 100644
--- a/samples/client/petstore/python-tornado/requirements.txt
+++ b/samples/client/petstore/python-tornado/requirements.txt
@@ -2,4 +2,4 @@ future; python_version<="2.7"
 six >= 1.10
 python_dateutil >= 2.5.3
 setuptools >= 21.0.0
-urllib3 >= 1.25.3
+urllib3>=2.6.3