diff --git a/github_issue_summarization/requirements.txt b/github_issue_summarization/requirements.txt
index 3857b5c90..958b0deed 100644
--- a/github_issue_summarization/requirements.txt
+++ b/github_issue_summarization/requirements.txt
@@ -53,7 +53,7 @@ fastcache==1.0.2
 fastparquet==0.1.3
 filelock==2.0.12
 Flask==0.12.2
-Flask-Cors==3.0.3
+Flask-Cors==5.0.0
 ftfy==4.4.3
 future==0.16.0
 gensim==3.2.0