diff --git a/code/NPI/pytorch/requirements.txt b/code/NPI/pytorch/requirements.txt
index ac78cdd..2a348d8 100644
--- a/code/NPI/pytorch/requirements.txt
+++ b/code/NPI/pytorch/requirements.txt
@@ -11,7 +11,7 @@ certifi==2018.8.24
 cffi==1.11.5
 chardet==3.0.4
 conda==4.5.11
-cryptography==2.2.2
+cryptography==3.2
 cymem==2.0.2
 cytoolz==0.9.0.1
 dill==0.2.8.2