diff --git a/dev-requirements.txt b/dev-requirements.txt
index fd1a6a90..33d389e0 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -29,7 +29,7 @@ codecov==2.0.15
 cookies==2.2.1
 coverage==5.0.1           # via codecov, pytest-cov
 croniter==0.3.29
-cryptography==2.8
+cryptography==3.4.6
 decorator==4.4.0
 deepdiff==4.0.6
 docker==4.1.0