diff --git a/backend/requirements.txt b/backend/requirements.txt
index 63eb278..3cc22da 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -35,7 +35,7 @@ volcengine-python-sdk[ark]>=5.0.26
 ollama>=0.4.0
 httpx>=0.27.0
 python-frontmatter>=1.1.0
-packaging>=23.0
+packaging>=26.2
 user-agents>=2.2.0
 cachetools>=7.1.1
 cryptography>=48.0.0