diff --git a/config/dummy.json b/config/dummy.json
index f446a497..fa3d5f27 100644
--- a/config/dummy.json
+++ b/config/dummy.json
@@ -9,9 +9,9 @@
         {
             "name": "lora_0",
             "optim": "adamw",
-            "lr": 3e-4,
+            "lr": 1e-4,
             "batch_size": 64,
-            "micro_batch_size": 32,
+            "micro_batch_size": 16,
             "test_batch_size": 64,
             "num_epochs": 20,
             "use_dora": true,
@@ -35,9 +35,9 @@
         {
             "name": "lora_1",
             "optim": "adamw",
-            "lr": 3e-4,
+            "lr": 1e-4,
             "batch_size": 64,
-            "micro_batch_size": 32,
+            "micro_batch_size": 16,
             "test_batch_size": 64,
             "num_epochs": 20,
             "r": 8,
diff --git a/mlora/__init__.py b/mlora/__init__.py
index b190501c..79ddfb65 100644
--- a/mlora/__init__.py
+++ b/mlora/__init__.py
@@ -22,7 +22,7 @@
 assert is_package_available(
     "torch", "2.1.2"), "m-LoRA requires torch>=2.1.2"
 assert is_package_available(
-    "transformers", "4.38.2"), "m-LoRA requires transformers>=4.38.2"
+    "transformers", "4.40.0"), "m-LoRA requires transformers>=4.40.0"
 
 
 setup_logging()
diff --git a/mlora/tokenizer.py b/mlora/tokenizer.py
index 2a3380f4..5f9bcc04 100644
--- a/mlora/tokenizer.py
+++ b/mlora/tokenizer.py
@@ -3,6 +3,8 @@
 from transformers import AutoTokenizer
 from typing import List, Union
 
+import logging
+
 
 class Tokenizer:
     def __init__(self, model_path: str):
@@ -15,6 +17,12 @@ def __init__(self, model_path: str):
         # maybe pad id is unk
         if self.pad_id_ is None and self.unk_id_ is not None:
             self.pad_id_ = self.unk_id_
+        if self.pad_id_ is None and self.eos_id_ is not None:
+            self.pad_id_ = self.eos_id_
+            logging.warn("Padding token ID is None, setting to <eos>.")
+        else:
+            raise ValueError(
+                "Can not set padding token id. <eos> and <unk> are None.")
 
     def encode(self, data: Union[str, List[str]], add_special_tokens: bool = True) -> Tokens:
         if isinstance(data, str):
diff --git a/pyproject.toml b/pyproject.toml
index b665f91a..e1272ce5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "mlora"
-version = "0.3.0"
+version = "0.3.0.post1"
 description = "A tool for fine-tuning large language models (LLMs) using the LoRA or QLoRA methods more efficiently."
 readme = "README.md"
 requires-python = ">=3.10"
@@ -18,7 +18,7 @@ dependencies = [
     "datasets",
     "evaluate",
     "accelerate",
-    "transformers==4.38.2",
+    "transformers>=4.40.0",
     "sentencepiece",
     "huggingface_hub",
     "scikit-learn",
diff --git a/requirements.txt b/requirements.txt
index 9cb10df1..676a45ca 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ torch>=2.1.2
 datasets
 evaluate
 accelerate
-transformers==4.38.2
+transformers==4.40.0
 sentencepiece
 huggingface_hub
 scikit-learn