diff --git a/smm4h/requirements.txt b/smm4h/requirements.txt
index 45171f1..f606226 100644
--- a/smm4h/requirements.txt
+++ b/smm4h/requirements.txt
@@ -4,7 +4,7 @@ astor==0.8.1
 attrs==19.1.0
 backcall==0.1.0
 backports-abc==0.5
-bleach==3.1.4
+bleach==3.3.0
 blis==0.2.4
 cachetools==2.1.0
 certifi==2018.4.16