diff --git a/requirements.txt b/requirements.txt
index 061c66e..ea552ee 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ asn1crypto==0.24.0
 astor==0.7.1
 attrs==19.1.0
 backcall==0.1.0
-bleach==1.5.0
+bleach==3.1.2
 bokeh==1.1.0
 certifi==2019.3.9
 cffi==1.12.3