diff --git a/environments/python/requirements.txt b/environments/python/requirements.txt
index 04d8f591..77f4b5ec 100644
--- a/environments/python/requirements.txt
+++ b/environments/python/requirements.txt
@@ -1,4 +1,4 @@
-Flask===0.11.1
+flask ~= 0.12.3
 bjoern
 httplib2
 python-dateutil