diff --git a/tox.ini b/tox.ini
index d240fb4f28..4dd26f519f 100644
--- a/tox.ini
+++ b/tox.ini
@@ -60,7 +60,8 @@ deps =
 extras = tests
 setenv =
   pre: PIP_EXTRA_INDEX_URL=https://pypi.anaconda.org/scientific-python-nightly-wheels/simple
-  pre: UV_EXTRA_INDEX_URL=https://pypi.anaconda.org/scientific-python-nightly-wheels/simple
+  pre: UV_INDEX=https://pypi.anaconda.org/scientific-python-nightly-wheels/simple
+  pre: UV_INDEX_STRATEGY=unsafe-best-match
   FSLOUTPUTTYPE=NIFTI_GZ
 uv_resolution =
   min: lowest-direct