diff --git a/samples/server/petstore/python-aiohttp-srclayout/dev-requirements.txt b/samples/server/petstore/python-aiohttp-srclayout/dev-requirements.txt
index ccdfca629494..735bb85c596f 100644
--- a/samples/server/petstore/python-aiohttp-srclayout/dev-requirements.txt
+++ b/samples/server/petstore/python-aiohttp-srclayout/dev-requirements.txt
@@ -1,2 +1,3 @@
 tox
 flake8
+pytest-aiohttp