diff --git a/transactid/requirements.txt b/transactid/requirements.txt
index 397433b..78e5366 100644
--- a/transactid/requirements.txt
+++ b/transactid/requirements.txt
@@ -1,2 +1,2 @@
-cryptography==2.7
+cryptography==3.2
 protobuf==3.9.2