diff --git a/requirements.txt b/requirements.txt
index 4abdbcb..9c175a3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,7 +21,7 @@ conda==3.18.3
 conda-build==1.18.1
 conda-env==2.4.4
 configobj==5.0.6
-cryptography==0.9.1
+cryptography==3.2
 Cython==0.23.4
 cytoolz==0.7.4
 datashape==0.4.7