diff --git a/allennlp-requirements.txt b/allennlp-requirements.txt
index d395efa..351fbbc 100644
--- a/allennlp-requirements.txt
+++ b/allennlp-requirements.txt
@@ -48,7 +48,7 @@ boto3
 
 # REST interface for models
 flask==1.0.2
-flask-cors==3.0.7
+flask-cors==3.0.9
 gevent==1.3.6
 
 # Used by semantic parsing code to strip diacritics from unicode strings.