diff --git a/requirements.txt b/requirements.txt
index d2d72930..b45ea458 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 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
 enum34==1.1.6
 funcsigs==1.0.2