diff --git a/google/genai/_local_tokenizer_loader.py b/google/genai/_local_tokenizer_loader.py
index 0f6edc3ad..ee6316032 100644
--- a/google/genai/_local_tokenizer_loader.py
+++ b/google/genai/_local_tokenizer_loader.py
@@ -45,6 +45,7 @@
     "gemini-2.0-flash-001": "gemma3",
     "gemini-2.0-flash-lite-001": "gemma3",
     "gemini-3-pro-preview": "gemma3",
+    "gemini-3-flash-preview": "gemma3",
 }
 
 
diff --git a/google/genai/tests/local_tokenizer/test_local_tokenizer.py b/google/genai/tests/local_tokenizer/test_local_tokenizer.py
index ca337b5e8..ea425ddea 100644
--- a/google/genai/tests/local_tokenizer/test_local_tokenizer.py
+++ b/google/genai/tests/local_tokenizer/test_local_tokenizer.py
@@ -37,7 +37,7 @@ def setUp(self):
     self.mock_tokenizer = MagicMock()
     self.mock_get_sentencepiece.return_value = self.mock_tokenizer
 
-    self.tokenizer = local_tokenizer.LocalTokenizer(model_name='gemini-3-pro-preview')
+    self.tokenizer = local_tokenizer.LocalTokenizer(model_name='gemini-3-flash-preview')
 
   def tearDown(self):
     patch.stopall()