diff --git a/conductor/tests/test_mma_exec.py b/conductor/tests/test_mma_exec.py
index f6e393a..51e05a7 100644
--- a/conductor/tests/test_mma_exec.py
+++ b/conductor/tests/test_mma_exec.py
@@ -45,7 +45,7 @@ def test_get_role_documents() -> None:
 def test_get_model_for_role() -> None:
  """Test that get_model_for_role returns the correct model for each role."""
  assert get_model_for_role('tier1-orchestrator') == 'gemini-3.1-pro-preview'
- assert get_model_for_role('tier2-tech-lead') == 'gemini-2.5-flash-lite'
+ assert get_model_for_role('tier2-tech-lead') == 'gemini-3-flash'
  assert get_model_for_role('tier3-worker') == 'gemini-2.5-flash-lite'
  assert get_model_for_role('tier4-qa') == 'gemini-2.5-flash-lite'
 
diff --git a/scripts/mma_exec.py b/scripts/mma_exec.py
index 1c6945f..9fabd59 100644
--- a/scripts/mma_exec.py
+++ b/scripts/mma_exec.py
@@ -62,7 +62,7 @@ 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'
  elif role == 'tier4-qa' or role == 'tier4':