diff --git a/tox.ini b/tox.ini
index 2fbed8907..fba3f6569 100644
--- a/tox.ini
+++ b/tox.ini
@@ -52,7 +52,8 @@ labels = test
 install_command =
   python -I -m pip install -v \
   --only-binary numpy,scipy,h5py \
-  pre,dev: --extra-index-url https://pypi.anaconda.org/scientific-python-nightly-wheels/simple \
+  pre,dev: --index-url https://pypi.anaconda.org/scientific-python-nightly-wheels/simple \
+  pre,dev: --extra-index-url https://pypi.org/simple \
     {opts} {packages}
 pip_pre =
   pre,dev: true