diff --git a/dev-requirements.txt b/dev-requirements.txt
index 34e7c703..161a1adb 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -3,4 +3,5 @@
 pytest==7.0.1  # last version to support Python 3.6
 flake8==5.0.4
 pytest-timeout==2.1.0
+pytest-asyncio==0.19.0
 pytest-aiohttp==0.3.0  # last version to support Python 3.6