diff --git a/python3-ecosystem.yaml b/python3-ecosystem.yaml
index 801d5bb..411da9e 100644
--- a/python3-ecosystem.yaml
+++ b/python3-ecosystem.yaml
@@ -25,7 +25,7 @@ data:
                 # bootstrap and platform modules conflict
         requires:
             platform: master
-            python3: master
+            python3: 3.6
     references:
         community: https://www.python.org/
         documentation: https://docs.python.org/3/