diff --git a/requirements.txt b/requirements.txt
index b472572..5eaacba 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,6 +6,6 @@
 # See https://cloud.google.com/appengine/docs/python/tools/libraries27 for libraries that are already included in the SDK.
 #
 # Note: The `lib` directory is added to `sys.path` by `appengine_config.py`.
-Flask==0.10
+Flask==1.0
 pymongo==2.8
 requests==2.6.0
\ No newline at end of file