diff --git a/Machine Learning Algorithms/NaiveBayesClassification/requirements.txt b/Machine Learning Algorithms/NaiveBayesClassification/requirements.txt
index 000ba21..da5e9ec 100644
--- a/Machine Learning Algorithms/NaiveBayesClassification/requirements.txt	
+++ b/Machine Learning Algorithms/NaiveBayesClassification/requirements.txt	
@@ -47,7 +47,7 @@ conda-build==3.18.8
 conda-package-handling==1.6.0
 conda-verify==3.4.2
 contextlib2==0.6.0
-cryptography==2.8
+cryptography==3.3.2
 cufflinks==0.17.0
 cycler==0.10.0
 cymem==2.0.2