diff --git a/requirements.txt b/requirements.txt
index 7d973fe..a60a2e2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ astor==0.7.1
 attrs==18.2.0
 backcall==0.1.0
 biopython==1.73
-bleach==1.5.0
+bleach==3.1.4
 certifi==2018.11.29
 chardet==3.0.4
 Click==7.0