diff --git a/requirements/development.txt b/requirements/development.txt
index 20cf8c381..870c431d1 100644
--- a/requirements/development.txt
+++ b/requirements/development.txt
@@ -2,7 +2,7 @@ coverage
 flake8
 isort
 mypy
-pytest
+pytest<4.1  # See https://github.com/pytest-dev/pytest-asyncio/issues/104
 pytest-django
 pytest-asyncio
 pytest-cov