diff --git a/setup.py b/setup.py
index 3e0e9d7..2ac219f 100644
--- a/setup.py
+++ b/setup.py
@@ -7,7 +7,7 @@
 
     install_requires = [
         'annotator==0.11.1',
-        'Flask==0.9',
+        'Flask==1.0',
         'Flask-Mail==0.7.2',
         'Flask-SQLAlchemy==0.16',
         'Flask-WTF==0.8',