diff --git a/requirements.txt b/requirements.txt
index 94347b2..b633f7e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ astor==0.7.1
 atomicwrites==1.2.1
 attrs==18.2.0
 backcall==0.1.0
-bleach==3.1.0
+bleach==3.3.0
 bokeh==1.0.4
 certifi==2018.11.29
 cffi==1.11.5