diff --git a/requirements.txt b/requirements.txt
index dffde14..f15b335 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ cffi==1.12.3
 cfn-flip==1.2.1
 chardet==3.0.4
 Click==7.0
-cryptography==2.7
+cryptography==3.2
 docutils==0.15.2
 durationpy==0.5
 future==0.16.0