diff --git a/tox.ini b/tox.ini
index f69bdc468..921bce316 100644
--- a/tox.ini
+++ b/tox.ini
@@ -16,6 +16,7 @@ extras =
 setenv =
   PIP_FIND_LINKS=https://girder.github.io/large_image_wheels
   GDAL_PAM_ENABLED=no
+  CIRCLE_BRANCH=ignore
 
 [testenv:test]
 description = Run all tests, including Girder