diff --git a/tools/buildchain/requirements.txt b/tools/buildchain/requirements.txt
index c858943..2997c31 100644
--- a/tools/buildchain/requirements.txt
+++ b/tools/buildchain/requirements.txt
@@ -3,7 +3,7 @@ appdirs==1.4.2
 bdist-mpkg==0.5.0
 bonjour-py==0.3
 cffi==1.9.1
-cryptography==1.7.2
+cryptography==46.0.5
 ecdsa==0.13
 enum34==1.1.6
 esptool==1.2.1