diff --git a/python39.yaml b/python39.yaml
index 80bc971..b22be3b 100644
--- a/python39.yaml
+++ b/python39.yaml
@@ -19,7 +19,7 @@ data:
 
               # Depending on our selves for bootstrapping
               # This is not needed in bootstrap phase 1 and can be disabled
-              python39: [3.9]
+              python39: [3.9_bootstrap]
 
               # sicpy needs package swig
               swig: [4.0]