diff --git a/requirements.txt b/requirements.txt
index ab254c2..a51bbf0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ setuptools==39.1.0
 absl-py==0.2.2
 astor==0.6.2
 backports.weakref==1.0.post1
-bleach==1.5.0
+bleach==3.1.4
 decorator==4.3.0
 funcsigs==1.0.2
 gast==0.2.0