diff --git a/requirements.txt b/requirements.txt
index 29568b1..74e2945 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ astropy==4.0.1.post1
 attrs==19.3.0
 Babel==2.8.0
 backcall==0.1.0
-bleach==3.1.4
+bleach==3.3.0
 bokeh==2.1.0
 cachetools==4.0.0
 certifi==2020.4.5.1