diff --git a/requirements.txt b/requirements.txt
index 466e320..e26122c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 requests==2.11.1
-flask==0.11.1
+flask==1.0
 requests-oauthlib==0.7.0
 ga4gh_client==0.0.1
 Flask-WTF==0.13.1