diff --git a/requirements.txt b/requirements.txt
index 079681a..cd91d78 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 attrs==19.3.0
 backcall==0.1.0
 basemap @ https://github.com/matplotlib/basemap/archive/master.zip
-bleach==3.1.5
+bleach==3.3.0
 cycler==0.10.0
 DateTime==4.3
 decorator==4.4.2