diff --git a/requirements.txt b/requirements.txt
index 93e83530..0cc71ae4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 transformers>=4.41.2,<=4.43.4
-datasets>=2.16.0,<=2.20.0
-accelerate>=0.30.1,<=0.32.0
+datasets>=2.16.0,<=2.21.0
+accelerate>=0.30.1,<=0.33.0
 peft>=0.11.1,<=0.12.0
 trl>=0.8.6,<=0.9.6
 gradio>=4.0.0
diff --git a/src/llamafactory/__init__.py b/src/llamafactory/__init__.py
index 7b602a92..5cd86134 100644
--- a/src/llamafactory/__init__.py
+++ b/src/llamafactory/__init__.py
@@ -21,8 +21,8 @@ Level:
 Dependency graph:
   main:
     transformers>=4.41.2,<=4.43.4
-    datasets>=2.16.0,<=2.20.0
-    accelerate>=0.30.1,<=0.32.0
+    datasets>=2.16.0,<=2.21.0
+    accelerate>=0.30.1,<=0.33.0
     peft>=0.11.1,<=0.12.0
     trl>=0.8.6,<=0.9.6
   attention:
diff --git a/src/llamafactory/extras/misc.py b/src/llamafactory/extras/misc.py
index 5f06a900..8908b807 100644
--- a/src/llamafactory/extras/misc.py
+++ b/src/llamafactory/extras/misc.py
@@ -80,8 +80,8 @@ def check_dependencies() -> None:
         logger.warning("Version checking has been disabled, may lead to unexpected behaviors.")
     else:
         require_version("transformers>=4.41.2,<=4.43.4", "To fix: pip install transformers>=4.41.2,<=4.43.4")
-        require_version("datasets>=2.16.0,<=2.20.0", "To fix: pip install datasets>=2.16.0,<=2.20.0")
-        require_version("accelerate>=0.30.1,<=0.32.0", "To fix: pip install accelerate>=0.30.1,<=0.32.0")
+        require_version("datasets>=2.16.0,<=2.21.0", "To fix: pip install datasets>=2.16.0,<=2.21.0")
+        require_version("accelerate>=0.30.1,<=0.33.0", "To fix: pip install accelerate>=0.30.1,<=0.33.0")
         require_version("peft>=0.11.1,<=0.12.0", "To fix: pip install peft>=0.11.1,<=0.12.0")
         require_version("trl>=0.8.6,<=0.9.6", "To fix: pip install trl>=0.8.6,<=0.9.6")
 
diff --git a/src/llamafactory/train/callbacks.py b/src/llamafactory/train/callbacks.py
index c9612e6e..94e1541c 100644
--- a/src/llamafactory/train/callbacks.py
+++ b/src/llamafactory/train/callbacks.py
@@ -75,8 +75,7 @@ def fix_valuehead_checkpoint(
         state_dict: Dict[str, torch.Tensor] = torch.load(path_to_checkpoint, map_location="cpu")
 
     os.remove(path_to_checkpoint)
-    decoder_state_dict = {}
-    v_head_state_dict = {}
+    decoder_state_dict, v_head_state_dict = {}, {}
     for name, param in state_dict.items():
         if name.startswith("v_head."):
             v_head_state_dict[name] = param