diff --git a/dev-requirements.txt b/dev-requirements.txt
index 107b644..e47f90e 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,4 +1,4 @@
-flask-cors==2.0.0
+flask-cors==3.0.9
 Flask-Testing==0.8.1
 httpretty==0.9.5
 coveralls==2.2.0