diff --git a/requirements.txt b/requirements.txt
index 9c317e6..b2c07d4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ atari-py==0.1.7
 atomicwrites==1.3.0
 attrs==18.2.0
 backcall==0.1.0
-bleach==1.5.0
+bleach==3.3.0
 box2d-py==2.3.8
 certifi==2018.11.29
 cffi==1.11.5