diff --git a/demos/dact/backend/requirements.txt b/demos/dact/backend/requirements.txt
old mode 100755
new mode 100644
index 2ef682a..5cdb813
--- a/demos/dact/backend/requirements.txt
+++ b/demos/dact/backend/requirements.txt
@@ -9,4 +9,4 @@ psycopg2==2.8.5
 psycopg2-binary==2.8.5
 pycodestyle==2.5.0
 six==1.14.0
-Werkzeug==1.0.1
+Werkzeug==2.2.3