diff --git a/skills/remove-ai-marks/scripts/requirements-markllm.txt b/skills/remove-ai-marks/scripts/requirements-markllm.txt
index 2d49e37..3723bea 100644
--- a/skills/remove-ai-marks/scripts/requirements-markllm.txt
+++ b/skills/remove-ai-marks/scripts/requirements-markllm.txt
@@ -27,7 +27,7 @@ nltk==3.10.3
 jieba==0.42.1
 tqdm==4.70.0
 matplotlib==3.11.1
-Cython==3.2.9
+Cython==3.3.0
 numpy==2.5.2
 scipy==1.18.0
 huggingface_hub==1.29.0