diff --git a/notebooks/requirements.txt b/notebooks/requirements.txt
index ca41eca..c1d9976 100644
--- a/notebooks/requirements.txt
+++ b/notebooks/requirements.txt
@@ -14,7 +14,7 @@ chardet==3.0.4
 clyent==1.2.2
 configparser==3.5.0
 constantly==15.1.0
-cryptography==2.3
+cryptography==3.2
 cryptography-vectors==2.3
 cycler==0.10.0
 Cython==0.28.5