diff --git a/requirements.txt b/requirements.txt
index 63145f9..b3e3e84 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 bcrypt>=4.0.1
-cryptography>=42.0.0
+cryptography>=40.0.2
 fastapi>=0.111.0
 httpx2
 oss2>=2.18.0