diff --git a/requirements.txt b/requirements.txt
index 0936390..758149a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ appnope==0.1.0
 argon2-cffi==20.1.0
 attrs==20.1.0
 backcall==0.2.0
-bleach==3.1.5
+bleach==3.3.0
 certifi==2020.6.20
 cffi==1.14.2
 cmdstanpy==0.4.0