diff --git a/requirements.txt b/requirements.txt
index a32bc2c2..1a07f23d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,6 +7,7 @@ mypy
 pep8-naming
 pyproject-flake8
 pytest
+pytest-asyncio==0.21.1
 pytest-operator
 requests
 types-PyYAML