diff --git a/2019/requirements.txt b/2019/requirements.txt
index 7bc9dd6..1e47547 100644
--- a/2019/requirements.txt
+++ b/2019/requirements.txt
@@ -8,7 +8,7 @@ cffi==1.12.2
 chardet==3.0.4
 Click==7.0
 colorama==0.4.1
-cryptography==3.3.2
+cryptography==39.0.1
 Flask==1.0.2
 idna==2.8
 isodate==0.6.0