diff --git a/requirements.txt b/requirements.txt
index d93ec8fca..8c5ff39d0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 setuptools==33.1.1
 wheel
-flask==1.0
+flask==1.0.2
 flask-session
 flask-socketio==3.3.2
 flask-helper==0.19