diff --git a/stimulus/requirements.txt b/stimulus/requirements.txt
index abfbb4c..691397f 100644
--- a/stimulus/requirements.txt
+++ b/stimulus/requirements.txt
@@ -5,7 +5,7 @@ certifi==2019.3.9
 cffi==1.12.2
 chardet==3.0.4
 configparser==3.7.4
-cryptography==2.6.1
+cryptography==3.2
 cycler==0.10.0
 decorator==4.4.0
 esprima==4.0.1