diff --git a/{{cookiecutter.app_name}}/requirements/prod.txt b/{{cookiecutter.app_name}}/requirements/prod.txt
index 875c613..d0ed6b6 100644
--- a/{{cookiecutter.app_name}}/requirements/prod.txt
+++ b/{{cookiecutter.app_name}}/requirements/prod.txt
@@ -2,7 +2,7 @@
 
 # Flask
 Flask==0.12
-MarkupSafe==0.23
+MarkupSafe==1.0
 Werkzeug==0.11.15
 Jinja2==2.9.5
 itsdangerous==0.24