diff --git a/g-cloud/requirements.txt b/g-cloud/requirements.txt
index 54cb0b2..a8fcb68 100644
--- a/g-cloud/requirements.txt
+++ b/g-cloud/requirements.txt
@@ -42,7 +42,7 @@ conda-package-handling==1.7.0
 conda-verify==3.4.2
 contextlib2==0.6.0.post1
 crcmod==1.7
-cryptography==2.8
+cryptography==3.2
 cycler==0.10.0
 Cython==0.29.15
 cytoolz==0.10.1