diff --git a/tox.ini b/tox.ini
index d775021..3cc7633 100644
--- a/tox.ini
+++ b/tox.ini
@@ -48,6 +48,7 @@ skip_install = True
 changedir = {toxinidir}
 deps =
     build: build[virtualenv]
+    -r {toxinidir}/requirements-airflow.txt
 passenv =
     SETUPTOOLS_*
 commands =