diff --git a/requirements.txt b/requirements.txt
index ca516ed..cee8c61 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ chardet==3.0.4
 click==6.7
 cryptography==2.3
 csh-ldap==2.0.2
-Flask==0.12.2
+Flask==1.0
 Flask-Migrate==2.1.1
 Flask-pyoidc==1.2.0
 Flask-SQLAlchemy==2.3.2