diff --git a/CBASS84_ITS2/requirements.txt b/CBASS84_ITS2/requirements.txt
index 2a15405..77019d7 100644
--- a/CBASS84_ITS2/requirements.txt
+++ b/CBASS84_ITS2/requirements.txt
@@ -3,7 +3,7 @@ Cartopy==0.17.0
 certifi==2019.3.9
 cffi==1.12.3
 chardet==3.0.4
-cryptography==2.6.1
+cryptography==39.0.1
 cycler==0.10.0
 fastkml==0.11
 idna==2.8