diff --git a/requirements.txt b/requirements.txt
index 9689952..f6c4ee7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ atari-py==0.2.6
 attrs==19.3.0
 backcall==0.1.0
 baselines==0.1.5
-bleach==3.1.0
+bleach==3.3.0
 box2d-py==2.3.8
 Click==7.0
 cloudpickle==1.2.2