diff --git a/requirements.txt b/requirements.txt
index 089f7eb..47ca5d1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,3 @@
-chinese_calendar~=1.10.0
 lxml~=5.3.0
 openai>1.0.0
 pandas~=2.2.3