diff --git a/scripts/mma_exec.py b/scripts/mma_exec.py
index 7342847..68b60e8 100644
--- a/scripts/mma_exec.py
+++ b/scripts/mma_exec.py
@@ -68,9 +68,9 @@ def get_model_for_role(role: str) -> str:
     if role == 'tier1-orchestrator' or role == 'tier1':
         return 'gemini-3.1-pro-preview'
     elif role == 'tier2-tech-lead' or role == 'tier2':
-        return 'gemini-2.5-flash-lite'
+        return 'gemini-3-flash-preview'
     elif role == 'tier3-worker' or role == 'tier3':
-        return 'gemini-2.5-flash-lite'
+        return 'gemini-3-flash-preview'
     elif role == 'tier4-qa' or role == 'tier4':
         return 'gemini-2.5-flash-lite'
     else: