diff --git a/github_issue_summarization/requirements.txt b/github_issue_summarization/requirements.txt
index 8440ddbd2..5ae69582f 100644
--- a/github_issue_summarization/requirements.txt
+++ b/github_issue_summarization/requirements.txt
@@ -15,7 +15,7 @@ beautifulsoup4==4.6.0
 bitarray==0.8.1
 bkcharts==0.2
 blaze==0.11.3
-bleach==1.5.0
+bleach==4.1.0
 bokeh==0.12.7
 boto==2.48.0
 boto3==1.5.14