diff --git a/requirements.txt b/requirements.txt
index 0152338..bfb7657 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 altair==1.2.0
 backoff==1.4.3
-bleach==2.0.0
+bleach==3.3.0
 certifi==2017.4.17
 chardet==3.0.4
 cycler==0.10.0