diff --git a/tox.ini b/tox.ini
index 09b4de3..e2dd9b7 100644
--- a/tox.ini
+++ b/tox.ini
@@ -15,6 +15,7 @@ allowlist_externals =
     poetry
     pytest
 commands=
+    poetry install
     pytest {posargs:tests/}
 usedevelop=True