diff --git a/lib/config.py b/lib/config.py
index 87b6485..d5bbf7f 100644
--- a/lib/config.py
+++ b/lib/config.py
@@ -156,13 +156,13 @@ CONTRIBUTOR_TIER_RULES = {
     },
 }
 
-# Role weights for CI computation (must match schemas/contribution-weights.yaml)
+# Role weights for CI computation (must match core/contribution-architecture.md)
 CONTRIBUTION_ROLE_WEIGHTS = {
+    "challenger": 0.35,
+    "synthesizer": 0.25,
+    "reviewer": 0.20,
     "sourcer": 0.15,
-    "extractor": 0.40,
-    "challenger": 0.20,
-    "synthesizer": 0.15,
-    "reviewer": 0.10,
+    "extractor": 0.05,
 }
 
 # --- Circuit breakers ---