diff --git a/backend/requirements.txt b/backend/requirements.txt
index 7c6f73fc6..f22883d10 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -1,6 +1,6 @@
 Flask==0.12.1
 pyjwt==1.4.2
-flask-cors==3.0.2
+flask-cors==3.0.9
 google-auth==0.10.0
 requests==2.13.0
 requests-toolbelt==0.7.1