diff --git a/tox.ini b/tox.ini
index a9b3e64b..05c5c490 100644
--- a/tox.ini
+++ b/tox.ini
@@ -49,7 +49,7 @@ pass_env =
     WEBBPSF_PATH
     GALSIM_CAT_PATH
 set_env =
-    devdeps: PIP_EXTRA_INDEX_URL = https://pypi.anaconda.org/scipy-wheels-nightly/simple
+    devdeps: PIP_EXTRA_INDEX_URL = https://pypi.anaconda.org/scientific-python-nightly-wheels/simple
 extras =
     test
 deps =