diff --git a/test-requirements.txt b/test-requirements.txt
index 6b5ceb7..25d7420 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -7,5 +7,6 @@ mypy
 pep8-naming
 pyproject-flake8
 pytest
+pytest-asyncio==0.21.1
 pytest-operator
 types-PyYAML