diff --git a/tox.ini b/tox.ini
index 79653aa..5763dcb 100644
--- a/tox.ini
+++ b/tox.ini
@@ -16,6 +16,10 @@ passenv =
     SETUPTOOLS_*
 extras =
     testing
+deps =
+    pytest
+    pytest-cov
+    pytest-asyncio
 commands =
     pytest -s --cov pyprediktormapclient --cov-report term-missing