diff --git a/requirements.txt b/requirements.txt
index 499e25a..b4ed8ce 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ affine==2.3.0
 appnope==0.1.0
 attrs==19.3.0
 backcall==0.2.0
-bleach==3.1.5
+bleach==3.3.0
 bokeh==2.1.1
 branca==0.3.1
 Brotli==1.0.7