diff --git a/fetch_holidays.py b/fetch_holidays.py
index 7658105..e803d3b 100755
--- a/fetch_holidays.py
+++ b/fetch_holidays.py
@@ -39,6 +39,7 @@ def get_paper_urls(year: int) -> List[str]:
     ret = re.findall(
         r'<li class="res-list".*?<a href="(.+?)".*?</li>', body, flags=re.S)
     ret = [i for i in ret if i not in PAPER_EXCLUDE]
+    ret.sort()
     return ret
 
 
diff --git a/tests/test_fetch_holidays.py b/tests/test_fetch_holidays.py
index fbaf9d2..affcb7b 100644
--- a/tests/test_fetch_holidays.py
+++ b/tests/test_fetch_holidays.py
@@ -9,8 +9,8 @@ from .filetools import _file_path
 
 def test_get_paper_urls():
     assert get_paper_urls(2019) == [
+        'http://www.gov.cn/zhengce/content/2018-12/06/content_5346276.htm',
         'http://www.gov.cn/zhengce/content/2019-03/22/content_5375877.htm',
-        'http://www.gov.cn/zhengce/content/2018-12/06/content_5346276.htm'
     ]