diff --git a/python/setup.py b/python/setup.py
index 9440540..86fcf60 100644
--- a/python/setup.py
+++ b/python/setup.py
@@ -40,7 +40,7 @@
     'werkzeug >= 0.11.10',
     'html5lib == 0.9999999',  # identical to 1.0b8
     'markdown >= 2.6.8',
-    'bleach == 1.5.0',
+    'bleach == 3.1.1',
 ]
 
 project_name = 'tensorboard'