diff --git a/requirements.txt b/requirements.txt
index 270de6a913a..608c2574c5d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ fbmessenger==5.2.0
 pykwalify<=1.6.0
 coloredlogs==10.0
 flask==1.0.2
-flask_cors==3.0.4
+flask_cors==6.0.0
 scikit-learn==0.19.2
 rasa_nlu~=0.13.0
 slackclient==1.2.1
diff --git a/setup.py b/setup.py
index a110c50ad27..a86dbfb5963 100644
--- a/setup.py
+++ b/setup.py
@@ -46,7 +46,7 @@
     "coloredlogs~=10.0",
     "ruamel.yaml~=0.15.0",
     "flask~=1.0",
-    "flask_cors~=3.0",
+    "flask_cors~=6.0",
     "scikit-learn~=0.19.0",
     "slackclient~=1.0",
     "python-telegram-bot~=10.0",