diff --git a/tox.ini b/tox.ini
index a1d611b..47ba2b8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -10,11 +10,9 @@ setenv =
     LC_ALL = en_US.utf8
     LANG = en_US.utf8
 commands =
-    sh -c 'curl -sSL https://install.python-poetry.org | python3 -'
     pip install pip --upgrade
-    pip install tox --upgrade
+    pip install tox poetry --upgrade
     poetry install
     poetry run pytest -s rosa/tests
 allowlist_externals =
-   sh
    poetry