diff --git a/pyproject.toml b/pyproject.toml
index afa5266..61d0ed8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,7 +29,7 @@ dependencies = [
     # Qwen3 does not support newer versions of Hugging Face libraries at this time.
     # Celune will use Transformers 4.x for the time being.
     "huggingface-hub<1.0.0",
-    "transformers<5.0.0",
+    "transformers<6.0.0",
     # For later usage in VoxCPM2, if the optimization path is fixed.
     # "triton>=3.6.0; sys_platform == 'linux'",
     # "triton-windows>=3.6.0; sys_platform == 'win32'",
diff --git a/requirements.txt b/requirements.txt
index 6514f8f..9354608 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,7 +21,7 @@ hf-xet
 # Qwen3 does not support newer versions of Hugging Face libraries at this time.
 # Celune will use Transformers 4.x for the time being.
 huggingface-hub<1.0.0
-transformers<5.0.0
+transformers<6.0.0
 # For later usage in VoxCPM2, if the optimization path is fixed.
 # triton>=3.6.0; sys_platform == 'linux'
 # triton-windows>=3.6.0; sys_platform == 'win32'