diff --git a/python/pip_freeze.txt b/python/pip_freeze.txt
index 98a1dcc..480fd18 100644
--- a/python/pip_freeze.txt
+++ b/python/pip_freeze.txt
@@ -5,7 +5,7 @@ attrs==18.2.0
 autopep8==1.4.4
 backcall==0.1.0
 beautifulsoup4==4.7.1
-bleach==3.1.0
+bleach==6.4.0
 boto==2.49.0
 boto3==1.9.183
 botocore==1.12.183